A group of four or more kids can have a chess tournament. You just need a few chess sets, which you can get cheap at Walmart. Then you lay out a cross table, list who's paired against who, and give out prizes to the winner of the most games....
Different ways of playing tags:
1. Frozen Tag - if you're tagged by 'it' you freeze until you are rescued. Use your creativity for rescuing techniques: you have to limbo under an arm; the frozen person makes a shape that you have to go through or ...