F-list, can you help me with a shockingly frivolous problem?

I needs me some new icons; I have a few I never use and need to replace them with something that amuses me enough that I will actually use them; anyone have any suggestions for where to look for some good ones? (I am prepared to spend four hours poking around LJ but if it is not necessary to do so than that would be preferred.)

Preferred fandoms include Game of Thrones, Hark! a Vagrant, TrueBlood, LotR, Harry Potter, Tamora Pierce, anything with vampires, Castle, and The Borgias. Also history-related things.