If I was getting a hamster,which I'm not, I'd think about calling it Frodo, or Samwise (Hamwise, maybe?) or Viggo, or Gimli. If it was a very feminine and beautiful hamster, I might call it Arwen if it were dark, or Eowyn if it was fair, or Galadriel if it seemed to be bathed in a pure golden light. I suppose it it were playful and silly I might also consider Merry or Pippin. If it smells bad, call it Orc, or Uruk-hai - if it appears to be afflicted ith multiple personalities, you can call it it Smeagol-Gollum - if it tries to hypnotize you with its beady red eye, you could call it Sauron, or Mordor.