If I could morph three things it would be:
A gorilla - I always thought it was like, the coolest morph ever! I love primates
If I could do that, I'd try to lift a bus or something lol
An Andalite - I know they're not real, but I always thought the description of them was beautiful. On the show and the book covers they were slightly weirder than what I actually imagined, it's hard to explain. But centaurs are cool!
I can't think of a third one... I've been working too hard today!