How to keep a child busy for hours in the summer: DIY: Giant Ice Cube Awesomeness - filled with plastic animals, dinos, and such. And I'm sure you could put in food dye before its frozen to color it like the ice block in the photo.
our life in a click: DIY Solar Jar Make solar garden lights! Find a glass jar, paint the inside with Elmer glue tinted the color you want and then go to the DOLLAR TREE and buy a solar light. Outdoor lights for nearly nothing!
The Very Hairy Caterpillar by familyfun: Made with knee high nylon hose, pony tail holders, potting soil and grass seed. Though you could also use wheat or barley grass. great idea in the kitchen for a healthy 'green' juice :)