rat names?

I'm trying to think of possible names for the two little rats who are going to move in with me this weekend (and hopefully will get along with Krümel without bloodshed). So far I'm considering Emil and Oskar, or maybe Ignatz (for the mouse from Krazy Kat). I like my rats to have names that are easy to pronounce and spell, and neither too long nor pretentious. Any suggestions?