Good Cheap Group Costumes???

[s15driftking]

I am going with a group of people out for halloween and we all want to go as a group theme... what would be a good idea that is inexpensive?


As you can tell by my avatar, a couple years ago we went as smurfs. and the year before that we went in bubble wrap spacesuits from "Dude wheres my car?". Last year we all went as flintstones characters.

What else would be clever and funny?

Help!