an Effer Esence or Alka-Seltzer tablet. Put it in a film canister or yowie
capsule or kinder surprise capsule. Place the tablet in one bit of the capsule
and fill the other part 1/2 full of water. Click them together and quickly, immediately
put it on the ground, stand back, and it will shoot up. Mine went as
high as my two story house.
By Rachael Dodds.