I really Want a pet, What should I get?

Well I live with my uncle and He hates animals for some reason! and wont let me get one. I can talk him into letting me get something small but I DO NOT want a hamster or guinea pig. I LOVE LOVE LOVE exotic pets such as hedgehogs and sugar gliders. I also LOVE training animals so if I can train it thats a BIG bonus! So basically something small, trainable, and cheap...ish. Oh and I also LOVE reptiles but there difficult to train, I have a python and taught him to roll over but it took months!