Everyone by now knows what happens when you mix Mentos and Diet Coke. If you want to conduct your own experiments but want to avoid getting drenched the Mentos Geyser Tube will do the trick.

Simply load the Mentos mints in this screw-on transparent tube, lock it on your plastic pop bottle (any fizzy drink will do but diet stuff works best) and pull the pin. Oh yes, and run for it. Because the moment the mints hit the liquid, a powerful soda geyser erupts from the top with enough pressure to reach 30ft – yes, 30ft!

Price:$10