It's all fun and games until a planet gets obliterated. So be careful. Go ahead and make a rainbow unicorn piñata gun by following the instructions at the link, but always observe the four rules of rainbow unicorn piñata gun safety:
1. All unicorns are always loaded.
2. Always keep your unicorn's butt pointed in a safe direction.
3. Keep your finger off the gullet until the butt is on the target.
4. Be sure of your planetary target.
Link -via The Mary Sue