SAPP Wins!! That's the one i was thinking of. There may be others but that is the least amount of pieces I was able to come up with. The others don't work.
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oinquarki post also works. nice job!

I didn't see Shoopi that does work without batteries, I like that one best actually... thanks to all who replied!
So now the big questions are 1. can it be done without batteries and 2. can it be done with just five pieces.