sign up (free!)
water play with multiple activities. It would be neat to have an area where several short hoses and sprayers with containers could be attached. I'd make it longer so that children would be spaced farther apart but I like the natural look of what appears to be a wooden wall and possible wooden steps or a bench behind it to provide better access from the top.
Sun Hats and Wellie Boots has created some great spray paint that is especially wonderful for toddlers. She even turned the art work her daughter made into gift wrap...