A printable pea shooter, made of a syringe, springs from a desk lamp and a few printed parts.A short video can be found here: http://www.youtube.com/watch?v=0JeQInnJPgUPrint out all parts.Mount the handle with 3 x (3 x 20)mm screws and 3 nuts.   The foremost hole remains empty (yet).Bead the "clamps" and "brackets" on the (3 x 60)mm screw   and the foremost hole.   Install washers on both sides of each "clamp" (see image).Add 2 nuts on each side of the screw (counternut)   or use locking nuts (I used 2 red plastic gears).Insert the (3 x 65)mm bolt through the rearmost holes of the "clamps".   Let 5mm jut out on each side (for rubber band). Fix bolt with glue. Use a soldering iron or a side cutter to cut a triangle shaped   flute into the upper part of the syringes piston (see image).Apply some drops of oil to the rubber seal of the syringe.Attach the front and rear "brackets" and mount the springs.Fix the rubber band that pulls down the "clamps".BOM:TOOLS: