I you watch LOST do that!
You could stick jungle animals and a polar bear in it (you'll understand if u watch it lol) that way you're not restricting yourself to one thing!!
Hope I helped
scrubs (or any medical show depending on where you live).....you could put lots of medical type things on it. can get toy steth. or tongue depressor, lot at dollar stores
Mr. Bean....get as many type of beans as you can, put his picture in middle or make people guess