If you were to get extras of a GraviTrax Expansion set, the Magnetic Cannon is very useful! Marble items on my Amazon page. As an Amazon Associate, I earn from qualifying purchases. https://www.amazon.com/shop/racegrooves
Gravity will eventually bring your #marblerun to a stop but the Magnetic Cannon by #gravitrax will keep your #marblemaze in action! You can use the Magnetic Cannon to boost a marble around your track. Well, you don't actually boost the same marble that arrives at the cannon but a new one will be propelled forward! Or, upward! You can use is to boost a marble back up to a higher level!