A lot of the background Fraggles were "whatnots," with detachable hair so they could be changed around. If you are familiar enough with the characters, you can spot many familiar faces among the Ancient Fraggles in Mokey, Then and Now despite everybody being bald.
So, back to the topic, it'd be fun to do the ice bucket thing with a Fraggle, but I'm not going to for fear it'd ruin the puppet.