I have a regular distortion pedal that came with my Peavey, but I suppose that doesn't really count since it only works on the type of amp that I own. I also have a Boss Super Delay, it's orgasmic and too much fun to have for when you're just wankin on your instrument. I have a Digitech Whammy Pedal which has several different settings such as harmonics settings, drop tune, dive bomb, and an octavizer if I'm remembering correctly. Lastly, I have a standard Crybaby, and that's fun if you want to be bluesy or hook up a mic to it.
Sad thing is I only use one at a time according to my outlet situation.