A Betta perhaps though I am not sure how hearty those are. I assume you can't get a big animal, ie a dog or cat or something of that sort. In all honesty, though very expensive, parrots can be ridiculously loving, very smart, and are known to outlive their owners. I myself am not a big fan of birds. Perhaps a bunny rabbit or a chinchilla could be appropriate? I love Chinchillas.