My Potato Cannon gets converted. Every year at camp I like to do memorable object lessons, but I do try to keep them safe. I built a cannon that instead of shooting potatoes, has been converted to shoot rolled up gym socks. The kids like this and the socks are less of a hazard than a flying potato! I illustrate how we can get out of a tight place by faith, prayer and God's mighty power. The cannon is powered by hairspray or WD-40, an internal BBQ igniter and operated by us with LOTS of caution.