An awesome water filled, ice encased sphere.
Step 1: Material
all you need is a regular balloon (not a water balloon) and food color (optional)
Step 2: Add water
fill the balloon with water (not too big, but not too small). If you have food color add three drops.
-then tie it up
Step 3: Freeze
Freeze for about four hours depending on the size of the balloon.
-you can tell if it's done by tapping the top, if it is hard it's ready.
Step 4: Pop
take it out and poke the top with a toothpick until it pops
-though it looks solid the ice gem is actually filled with water,
if the water doesn't drain then poke the top with a toothpick and it will.