More from Doug Eng! Ball Call is a fun warm-up and a great way to encourage focus.
Mark several balls with different colored markers. For example one might be a red 2; another might be a blue 8. Random colors and numbers are fine. Coach tosses one of these marked balls into the air. First player to correctly identify number and color earns one point.
For larger groups, divide into teams or pairs with players doing both the tossing and the calling.