Originally Posted by Charlatan

Watch out for ferrets though, they don't litter train as well as cats... I had one for a while and not only did it constantly steal my socks (and chew my toes) but it found one corner in the house and constantly used it as a dumping ground... It was quite foul.

Other than that, it was a relatively pleasant animal.

I would suggest a guinea pig or a rat. They care like hamsters but are a little bigger... rats are also trainable.