Free Kids Games: Summer Activities That Cost Absolutely Nothing

To beat your kids' "I'm bored" blues this summer, try introducing them to a new activity or a twist on an old game. For instance, have you ever painted using squirt guns or played night time bowling with glow-in-the-dark pins?

Below are 21 DIY summer games to keep your kids busy during the hot months! And the best part? They'll cost you absolutely nothing!