Basically a bunch of toys that transform you into something else. some dungeon/trail/raid bosses use them. I know ffxi had the chocobo beret (would change you into an egg that would hatch you into a chocobo once clicked)
Such creatures:
Toad
Imp
Water Imp
Fire Frog
Chicken
Enkidu
Moogle
korpokkur
Old Crone
There's a few others! (but i forgot their names)
maybe replace their attack animations with cosmetic effects?
perhaps they could be dungeon/raid drops? or Blue spells?
(Never before have i felt such peace until i began hopping around as a korpokkur..)