Gather boxes and balls (or balloons) (or BOTH!) and play a full size game of Angry Birds!

Adjust the original game however you like:

The objective of the game is to eliminate all the pigs on the level. Using a slingshot, players launch a limited set of birds with the goal of either striking the enemy pigs directly or damaging their surrounding structures, causing the blocks to collapse and squash the pigs.

pic via