Sandboxes are awesome.
You can make stuff with sand and maybe water if you have it.
Though this article sucks so just go to this link to an actual wikipedia article on sandboxes: (Sandbox)
Kids play in it but I guess adults can play in it too so don't feel bad.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Sandbox-2013.jpg/220px-Sandbox-2013.jpg)