Well, Snickers is the entertainer! She seems to think she is a dog and will wiggle her little tail and make soft chirping sounds when ever she wants cuddles. She also has no sense of depth and often falls right off of her shelf, before excitedly running back to do it again!
Oscar is just vain and loves to sit having a wash or zooming about looking for somewhere good to dig.
I honestly can't choose a favourite thing, everything they do is so fascinating.