A desk object? A paperweight? We'd call it a perfectly beautiful 'work from home' distraction.
The Jack Puzzle is comprised of six different exactingly milled notched brass bars that interlock in one specific way to create a unified "jack" shape. Includes hand-drawn assembly instructions, but we'd leave those unread if you really want to have some fun with it.
1/2" diameter bar, measures 3" X 3" X 3" when assembled, and weighs around 1lb.
Made from solid Cartridge Brass (70% copper, 30% zinc).