Our oldest son has been experimenting with welding geometric shapes, these are octahedron made from stainless steel (one is made with individual triangles and the other is folded, then welded). He has plans for a large sculpture.
Our budding arborist was practicing climbing trees.
This whole area was farm fields 30 years ago, so there are no large trees to climb. I thought it was odd how the pine tree in the back looks like an artificial tree with such perfectly spaced branches.