This Peanuts "Disco Dancer" Matchbox Jigsaw Puzzle, featuring Snoopy and Peppermint Patty shaking their bootys on the disco dance floor (toot, toot, heeey beep, beep), is tiny, measuring 2.5" 1.5".  I've always been the original owner of this (I acquired it when I was a teenager in the late-1970s) and it's in great condition and complete.  I have a feeling it's a rare Peanuts item too.