Day 1: Red White and Blue Snacks! (Sugarcookies or Apple, Blueberry, and Cherry Pie)
Day 2: Water Balloons/Swimming Day 3: Out Door Barbecue Day 4: Fire works and Sparklers
Rules:
This can be art or roleplay, you can even start early if you want, the challenge does end on the forth however. This is meant to be a fun thing, so get creative, and have fun this summer campers!
Just something I thought up (BTW can be used for any fandom not just The Lorax)