The Trick: The Ever-Filling Jug
A fun prop magicians will often use is the ever-filling jug. The jug contains a small amount of water, but quickly runs dry when poured out, so the magician puts the jug down. Then, a little later, the magician picks up the jug and somehow it’s refilled. Later, the magician can empty it again and again, as the jug produces an unending flow of water a little at a time.