You know the old adage that kids have as much fun with the packaging as they do with the toy it contains? Here's yet another clever example; look what you can do with one large flat box and few large cardboard tubes cut in half.
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.