This is brilliant! And so simple! (For old pallets in the yard!) Wow, this would have been the location of so much play wguyhen I was a kid. We did so much An old pallet! pretending to be in the middle of the ocean, or lava, or what-have-you.
Source for kid rock climbing holds& Dream is to convert one of the walls of Jean& garage into a climbing wall for the kids. Get some horse stall mats so they bounce if they fall; A jungle gym that doesn& take up any extra space.