I love to see the variety of different things that we all do when we can't dive!
Me, I build stuff. All kinds of stuff. Everything from colored copper artwork, to the 22' aluminum catamaran that I dive from.
This is my 1976 Bridgeport milling machine, and my 1962 South Bend Lathe. They are relatively new to me, and still need a little restorative lovin' at the moment. But properly taken care of, they should be turning out good stuff in the hands of my grandkids.
A bit of the copper stuff: