I have around 13 of the steel puzzles from http://tavernpuzzles.com. They have languished in a bag in the garage since we moved here as the decoration did not lend itself to their display. Now though we have a wall for them. They are pretty heavy though. So I’m pondering either 1. Hanging them individually by wire, 2. a horizontal pole (or two) for them, 3. Hooks or 4. Big nails. It’ll probably be the last one as it gives more flexibility in placement. They are very nice things to have – recommended gifts too. The creator has a Youtube channel for solutions though not so many yet. There is at least 1 ebay store selling them.