Science Museum Intruder Alarm

Is it magic or is it science? This kit contains 20 fun tricks. Have fun astonishing your friends and family. From magnetism to mathematics to mind reading? Includes a specially designed screw cap, 2 straws, a plastic cup, a suction tube, metal washers, a mini U shape magnet, 3 mini plastic boats, 2 glow marbles, 4 paper clips, 2 long paper strips, a printed paper leaflet, a printed card board, ...