1. I have an idea of playing a game for kids from kindergarden-up . based on the age group once could fill a transparent bottle with certain number of peanust with the shells and let the kids guess the number, the one which guess the closest would win. 2.Memory game  put stuff starting with each alphabet i.e 26 different things. And then ask kids to go around and keep in memory of what they see. If you want give a handout with A-Z so that its easy for kids to write what was there with that particular alphabet. The one who gets more number is the winner.