Some Observations on Compatibility with I Am items (IA):
There seems to be a couple of "classes" of IA's and some items have their unique abilities:
Grunnie-types
Humanoids
Hard Shell Pack
Dust Bunny
Most IA's sort into the first category, and some things within a category may have slight differences. I experiment a lot, but i don't remember well, so there may be some things i miss, but i'm kinda sorting through them as i go. I haven't tested every item on Gaia, just things i own. Clothing poses never work, nor anything that attaches directly to the base, except wings.
CLASS LISTS (partial) What IA's are in each class, and what works with them.
Where i say, "part of..." or "some of..." that means the whole pose doesn't show. The first pose of most items just goes by the item name.
First, the Grunny class, to which most IA's belong, the ones i own of which are:
Enchanted Tome, Mercury, Hermes, Wonderland, Starmony, Longcat, Ara, White Drome, Faustine, Pantheracorax, Fallen Wish, Jinxi, Inari, Gogh, Noel, Sundae Sweets and Strawberry--, Cheepz, Cow, Mona, Siedh, Tutu, Twister, Ace, Boto, Shadowlegend, Nightmare (Buer and Bogey Man only) and even though they look like humanoids, Alruna, Foundling, Kottan, and Ebenezer.
They show a lot more items from behind than facing forward, and most things that work are not "attached" to the base. Almost all wing poses will show from behind, some show from both sides. Some of the IA's in the list will deviate in one or two cases.
Some of the items that work from both sides:
Albus Egg (halo)
Animal Cracker Buddies (all the ground poses)
Antique Shop (window)
Autumn Glory (Boughs)
Carol of Ol' Ebenezer (ominous mist, with some green goo in the front; the mist part of misty graveyard, with goo front and back; same of warlock's future; hellfire with goo both sides)
Case of Pietro (mob, and i think blood spill, but i don't have all the gens)
Celebrity Snare Hulk Impact Crater missing some in front
Celestial Wrap (Spiral Galaxy)
Cheepz (Ground Poses 1-10)
Chill of Artemis
Cloud and (Rainbow)
Compass of Seidh (attack of the mysterious wyvern, half of Sash of Heimdall, parts of Sash of Loki)
The Cosmos (Black Hole which makes anything that is completely under it disappear)
Death Whisper Dark Power
Error (all poses except red X)
Fairy Ring half missing in front and (fairies also half missing in front)
Fallen Wish (Way to the Stars)
Grave Danger Funeral Frame goo in front
Happy Capsule (Happy Scenery, partial and gooey in the front)
Herme's and Mercury's Moon (Wing)
Hidden Ace (all Wings)
Homeroom (all the bus parts)
Jinxi's Charm (part of Commencement Chant, the arms of Awakened Spirit, part of Forgiven Chant)
Kanoko's Dark Reflection (in the mirror with some interesting effects from the front)
Lumiere Noire (both Moons)
Lyndexer' Journal (Hospital Room, wing)
Mana Seed (both Mana Trees, but the front only shows a little, and the night one greens almost the whole square from the front)
Nano-C (all Aerial Boosters, Target Analysis)
Nightmare (Popobawa shows mostly from behind; one wing is visible from the front, Crescent)
Padmavati's Lotus (halo)
Pixie (Dust Cloud)
Rainbow Jubilee just the cloud part in front
Regalia of the Flame Tongue (Flaming Ring)
Reve Rouille (shallows and an offer both with green goo, shadow show poster, operating light, diving in)
Secret Retreat (Mirror)
all Sleepytime Beds
Smashing Cities (parts of all poses)
Summer Grass Field missing some and goo in front
Super Powers missing some in front and (parts of Death Summon)
Trail of Ants missing some in front
Wild Armor (parts of all poses)
Xmas 2K10 Event Winter Night
Yemaya's Pearl (under the sea but it's all green goo from the front)
Some items that show only from the front:
Baby Grand (+seat with goo)
Biancamella and Azuramella (slowing, floating, carmelize, growing, materialize, crystalized halo)
Double Complete Rainbow with goo
Gogh Reed (Lightning)
Masquerade (phantasm, crack [with green goo], supernova, --burn and pearls [both with green goo], visage [with green goo])
Nightmare (They never found their way back, some of Invidia)
most of Overseer's Tub
Regalia of the Flame Tongue (Flame Burst)
Shadowlegend (Death)
Trick or Treat Tote (shy Marshmallow Ghost)
Voracious Fog (Heart Consume)
Winter Rose (Thumbelina)
Some items that show only from behind:
Abundant Garden (Scarecrow, Garden)
Albus Egg (cape with green goo)
Aquatica (Green Bubbles, Bubbles, parts of Fish are Friends!)
Autumn Glory and (Leafy Pile)
Baby Grande (Fluttering Sheets)
Beach Day (both)
Biancamella and Azuramella (candied wings)
Carol of Ol' Ebenezer (Destruction, Curse of Destruction, musket on back)
Compass of Seidh (most of Summoning the Valkyries, parts of both chariots, seidh wings)
Coocoon (all the wings)
Crystal Parol and (snowflake)
Dander (only a small part of Tornado)
Death Whisper upper charge, Hellfire, Darkfire Dark Wraith Wings
Dreamer's Dust (Dreamland, one of the Wings)
Enchanted Book (some of: Dematerialize, Enchanted Swirl, FairySwirl; all of both Palaces)
Execution Tools
Fallen Wish (Flyer)
Faustine's Bottle and Yearning, Release, Descent, Wings of Clash
Fausto's Bottle Stage 8, 7, just the bottle of 7 (2), ditto 6 (2), ditto 5/5 (1)/(2)/(3) all with goo, Release, Yearning, Innocence
Fremere's Guard (part of Field of the Insatiable, Wings Schema, -- -Flow, Wings of Wrath, -- Left and Right)
part of Gavle Goat
Gift of the Gods (half of Scale of Anubis)
Gift of the Goddess (one each of the Wings)
Gogh Reed (Leafy, Lightning Cape, some of Cyclone, some of Smog, Sprinkles, some of Sandstorm, Crystal Wings, Leafy Wings, some of Aqua Liquid, Aqua Burst, Zero Wings)
Golden Sparkles
Great Old One (wings)
Grunny (shoulder)
Gwee (On my Back and Behind my Head)
Halftone Hero (all poses)
Herme's/Mercury's (both Times)
Heroes Eclipse
Hidden Ace (trump, you lose!, back design, magibani)
Homeroom and (Classroom, Library)
Ilmacchiato (wings)
Inari's Beads (parts of tsuchibi and mukaebi)
Infernal Spirit (part of Flaming tendrils, Boiling pit, some of Flame)
Imaginary Friend (Wings, both Police Boxes)
Jinxi (Forgiven Wing)
Kelp o'the Loch (Loch at Night and Something in the Loch)
Kottan Bell (wings)
The Love Song (some of waves, some of seaweed, one of mermaids)
Luck o'the Gairish (Cloverfield)
Lyndexer's Journal (Trench, part of Aircraft, War Site)
Mana Seed (Flowering, Summer Fruit)
Masquerade (transcend spark, transcend crown [with green goo])
Nano-C (Static Field [helical])
Nartian Rock (star base)
Nightmare (some of Webbing, Malphas Flight)
Noel's Gift (Gallus Wings, Golden Leaves, Pear Tree, Mini Golden Wings)
Oculus Magica (Electrica, Fira, parts of Ponies and Rainbows and Pwetty Birdies)
Oh My Gumball (barbed tendrils)
Owlpocalypse (Snowling)
Padmavati's Lotus (Lotus Seat, all the Petals, Heavenly Light)
Rainbow Jubilee (wings)
Shadow Spirit (Shadow Flame, Flame Ring, Flame Aura)
Shadowlegend (Tenkaze Village, Burial)
Silent Night (Starry Night)
Silver Laurels (tree)
Snow Feather (Gilded Cage)
Spring Nymph (wings with goo, Mana Tree)
Starmony (always)
Titan's Legacy (Tree, Crest of Awakening)
Twister the Fire Phoenix (wings)
Vampire Bat Swarm
Water Splash only the bottom part
Winter Rose (Petal Rain)
Yama no Tamago (yama)
Yemaya (wings, with green goo)
Humanoid-type IAs
Humanoid IAs generally equip most of the things that Grunny-types can, with some exceptions and differences in what side shows. In addition, Humanoids can equip almost all humanoid companion items. (like the dr's and nurses in Trick or Treat Tote, or the Alruna/Anurla companions). These usually show from both sides.
Turtle!
Hard Shell Pack defense poses generally equip more completely, that is, where grunny-types and humanoids show only parts of things or from one side, the turtle shows more or even all. With just a few exceptions, HSP will show things that Grunny-types do. Most wing poses, however, do not show on HSP (Spring Nymph is one exception).
Some item poses Grunny-types don't show, but turtles do, are listed here:
Visible from both sides:
some of Autumn Glory
Catastrophe (dreaming of fishies)
Clock Egg (most of Explode)
parts of Divided Stars and (most of crescent canoe)
Fremere's Guard (Falling Fury)
Furugasa (parts of ittanmomen)
Gift of the Gods (part of Cerebrus)
Gothic Veil
Picolitrosso's Urn (parts of both ethereal flames)
part of Pixie
Visible only from the front:
Aerial Ribbon Dancer
Dander (a bit of Dust cloud with goo)
Flame Sword (part of @ss on fire!)
Golden Laurels Sparkle just the sparkles with green goo
Nano-C (drone Mk I, II, III)
Pixie (part of Clips)
Reve Rouille (broken heart)
Voracious Fog (most of Heavy Burden, Brume)
part of Western Zodiac, and (Virgo's Veil)
Visible only from the back:
Furugasa (onibi kohai, kitsunebi kohai)
Pixie (part of Dust Cloak, part of Dust Scarf part of Dust Skirt)
Summoning Tome (most of Dragon of Light and most of Dragon of Dark)
Yama no Tamago (torii, furutorii)
Dust Bunny
Dander (You are dander bunny) can equip more item poses than any other IA. Almost anything that is not normally directly attached to the avatar base will show at least some part when equipped on the dust bunny. Some things show only a little portion, and some only from one side, but if you've gotten some idea of what kind of things equip on IAs, you will find little frustration in trying on various items; a list would be ridiculously long.
Animated Items and Items that Animate when Moving:
The bubble pop and falling leaves animated items will equip on IAs, but only show if enough of the avatar square has other stuff there. For example, just the Grunny isn't enough, but if you add the boughs from Autumn Glory, for example, it'll work.
Items which have animations in flash environments can also be equipped, and even if they don't show on the avatar changing screen or in forums, their animations work in flash environments. They have to be equipped last, so their animation takes precedence. These include:
Chyaku Norisu Scarf and (Unknown Hero)
Sinister Scarf (all poses).
Disappearing Completely:
You can have nothing at all of your base or any IA showing if you combine the Longcat Scarf (tacgnol)
with any of Pantheracorax, Drome, or Dander (and possibly some others i don't know). In order to do it, though, you must have other stuff equipped so that both sides of your avatar have something showing. This can be as little as the Trail of Ants.