Well, I've got a "water table" on the honey do list coming up soon. For those that don't have children a water table is essentially 4 legs that hold up a large tub filled with water. Set it in the backyard and let the kids go to town. I'm thinking of using red cedar to build it out of as it will likely be wet a lot. Obviously I don't want to use pressure treated woods with the kids using it. Any other suggestion on a wood species to use that will see a lot of water.