The day camp I help out with is looking for some new ideas to do has weekly topics. This summer our groups will be broken down by 1st-5th and 6th-9th. Any ideas would be a big help. We are have a meeting to to look at new ideas on the 29th.
I started a website to begin compiling some of the themes and activities that I have used with kids in the past. Feel free to check it out: http://corduroysbutton.wordpress.com/.