Sealable plastic sandwich bag
Step 2: Add BBs
Put around 20-30 bbs in the bag.
Step 3: Add the Vinegar
Pour a quarter cup of vinegar into the plastic bag. A few ounces is fine, but for the airsoft grenade to work, it really doesn't have to be scientific.
The bigger the bag the more u need!
Step 4: Make the Secret Weapon
Spoon a couple teaspoons of baking soda on to your paper towel.
Step 5: Almost Done!
Pinch the plastic bag with one hand so that the vinegar stays trapped in the bottom and the bag is still open at the top.
Step 6: Put the money in the bag
Place the paper towel with the baking soda folded inside into the opening of the bag. Be sure not to let the paper towel touch the vinegar.
Step 7: Seal it
Seal the plastic bag. Remember to keep the baking soda and vinegar separate!
Step 8: Game time!
Shake vigorously and fire away. You are now ready to fire your airsoft grenade. Shake the plastic bag for a few seconds until the vinegar is saturating the paper towel. Launch it at your opponent and watch it explode. (The pressure building in the plastic bag from the mix of vinegar and baking soda will eventually cause the bag to pop.)