Tape plastic cups to the edge of the table. Give each player a pile of "snowballs" (white ping pong balls) and an empty paper towel roll. Race to see how many snowballs each player can blow across the table and into the cup.
A Bit Dicey - While holding a craft stick in your mouth, player must stack 6 dice on top of each other on the end and hold for 3 seconds. “Minute to Win It” Party Games, http://hative.com/minute-to-win-it-party-games/,
I counted 29 different game and activity ideas listed on this Playworks page. Even better, the games have been sorted by playing environment from cafeteria, to gym, to hallway, and classroom. If you're not familiar with all of the games, there are links on this page that take you to detailed instructions for set-up and play.