This is a method that I've been screwing around with lately and I was wondering what you guys think.
When I can't think of anything to draw, I type random stuff into Google Images to find interesting pictures. Usually it's a first name, sometimes a verb, sometimes even short, random assortments of letters. My theory behind this is that I've seen a lot of pictures marked with random things that mean something to someone somewhere, and while I wouldn't recommend this to beginners or for a finished work, I've created some cool sketches from it.
What I'm getting at is the whole random image trawling thing. I've found many more interesting sources of reference when I have no idea what I'm looking for as opposed to when I'm looking for something specific.