Trick pony, anyone?

Greta's kissy-kissy trick on video. And she has learned a new one, hugging. Cute stuff, really. I've tried teaching her other things, but if she's not gung-ho about it in the first place, I'm not successful in continuing the training. Which is allowed, because she's gung-ho about everything else in training: ground manners, riding, the important stuff. And no, she is not going to learn how to rear. That's one of the stupidest things you can teach your horse in most circumstances.

So far the failed list includes bowing, raising a hoof, and smiling. She doesn't do a lot of "smiling" in the first place, even with funny smells, so I didn't have much to work off of there. She's too smart to put her head between her legs to bow - she'd much rather just step backwards to my hand and/or look at me like, "Girl please." And she is dead-set that the only way to raise a hoof is if you make to pick it. And she has no problems whatsoever with hoof picking or picking up her hoof, so I'd rather not make it a problem. And she doesn't paw, so I have nothing to work off of there. And I'd rather not teach her to paw!

Any trick ideas? Seriously, we're starting to get pretty bored now ;)