This is one of my favorite simple tricks. More of a puzzle, but if you keep one on your desk at work, or coffee table, it is a great icebreaker for other magic.
A tiny bottle-shaped piece of anodized aluminum is shown. In its side is a depression into which a small steel ball bearing fits. When the ball is put into the depression, the magi can turn the bottle with that side downwards, but the bead does not drop out -- hence, the name! The spectator tries and the bead always falls. But the magician can make it stay every time.
Because it is an odd looking thing, Drop Out usually prompts questions from those who see it. After showing the strange properties it possesses in only your hands, the door is open to show a few more heavy-weight closeup miracles.
Brand new, with instructions.