My trap's name is the Leprechaun Trapper 9000. To make it, you'll need to marbles, some thread or string, a cage or small bowl, a bottle cap, a stand with a curved end, a pair of scissors, and some sort of slab with to prongs sticking out of it. First, you need to take a bit of string, tie it around each marble, and set it on the prongs of the slab. Next, tie another piece of string to one of the marbles and the scissors. Then, mount the scissors to the stand. Finally, tie the cage or bowl to the curved end of the stand, but make sure it's within cutting distance of the scissors. When the leprechaun gets drawn to the bottle cap, it will walk through the makeshift trip wire you've made, either breaking the string or pulling it down, thus causing the scissors to cut the string attaching the cage and stand. The cage will then fall on top of the leprechaun and trap him until you check the trap the next morning. The simple machine n my trap is the pair of scissors, which is a lever. It makes the trap work easier because it cuts the string, thus dropping the cage.