Balloon ninjas to shoot with nerf guns. This is a fantastic idea! Great for little boys! I know this was posted as an idea for little boys. but I think I'd like to have a nerf gun battle with these ninjas.
Glow in the dark egg hunt. Could spray paint the eggs with glow in the dark paint instead of using glow sticks. Also, doesn't have to be for Easter. Could be a fun night time scavenger hunt or other fun summer game.