PLA Filament printed at .3 2 motors (edited 11-03-2016 had the wrong motor listed.. sorry about that.. the one I listed will still work it just won't last long.. use the one below) https://www.pololu.com/product/611 8 zip ties 1 rubber band 4AA Batteries 1 plastic AA battery holder https://www.pololu.com/product/1154