We thought being a stick figure family was the funniest idea as parents and people who actually cannot stand those stickers on peoples windows! We just got some black tops and pants from Walmart, silver duct tape, foam board and some exactos and got to work. We traced out the faces on the foam board, covered them with tape and hot glued an elastic to the back to hold it on our heads.
We all had props too. The Dad had a briefcase, the mom another baby, the daughter a cat and the son a soccer ball. We even made an identical family to put on the back of my minivan we drove the night of the party. Took me and my friend a few hours and a few glasses of wine but we got them all done in one night! We were the hit of the costume party we attended. Plus, after Halloween, we just took the tape off our clothes and could wear them again.