Well, they already got tonberry, moogle (I got a ffxiv style one that isn't the postmoogle), and chocobo ones. If they weren't so damned ugly, I'd say egis so I can dress up as a SMN at some con and toss ifrit at someone's face, ordering it to go for the eyes.

They probably got cactuar plushies out there, I'm sure.

OH! A sylph plushie would be cool.