Saw these over on Fred Brum's page, and though I've never really used any kind of mute, decided to pick up a set.
GRUV GEAR ∑ FretWraps String Muters ∑ MAKE LIFE GRUV
Check 'em out. Especially those of you that have a scrunchie on your headstock right now.
I've found that a pair of women's pantyhose work well too.