Great list for Outdoor Summer Fun. Some new and amazing ideas I haven't seen yet to keep kids busy this summer. Worth a look for the links alone! 30 out of the box ideas (and awesome links to support you in doing them.
Leave of Mountain Dew in bottle, add a tiny bit of baking soda and 3 caps of peroxide. Put the lid on and shake - walla homemade glow stick (bottle) solution. What a fun summer thing to do with the boys!