We played All On The Wall. Everybody lined up on the wall, while one or two people chucked kickballs at people. You couldn't lose contact with the wall for more than 5 seconds. Last person (or last two people) on the wall win, and get to chuck next round. A lot of crotch and face shots.
Also played a lot of teatherball. My friend Nathan and I were the playground champs at it, I had perfected a move which could wrap the ball around the pole in 4 seconds flat (if untouched by the opponent). I DID get beaned in the head ONE time by my own throw, I may have blacked out for a second or two.
Also in the later years of my elementary days, those nerf football rocket things became pretty popular... you know, the mini footballs with the long tail fins. I was undefeated in distance. The marker person, who stood at the opposite end of the playground, had to stand where the last throw landed. He couldn't move if he was going to get hit either :evil: