I had heard about this great park on Mercer Island called Adventure Park. It's only open during the summer on specific days and during specific hours. It is basically in the woods and kids check out a tool box. Once inside the kids have free reign to build whatever they want.
I invited my friend Jen and her family to join us and I'm so glad I did. Bathroom breaks would have been hard to manage because an adult needs to be with the kids that are building things.
It was so fun watching these kids in action as they worked out a plan and tried to figure out how to build their fort. Unfortunately we ran out of time and never finished but I think they all had a lot of fun. Zephyr and the boys want to do something like this at Papa Bob's property so they are going to start working on a plan.