Best way to launch a marshmallow? I have a limit of $20 to build a small launcher. It will launch a large marshmallow. What is the best way using items bought from any retail stores? It has to land in the same place consistantly and for 50feet. I am thinking something along the lines of spinning around a axis and hitting a stopper and it flings out. Also possibly using CO2 as the pressure. Wonder if it is possible to make it spin to reduce wind disturbance?? Any suggestions? Maybe a large bolt with a nut on it, somehow co2 can spin the nut and the marshmallow being attached to a rod sticking out from the nut will rotate very fast then stop so the mallow will fly off. I don't know!!!! Oh and I thought of a tube with a case for the marshmallow that would fly off in air. but htat would seem to alter the marshmalow each time I would think. Need to hit a target 50ft away horizontally.