I made a shelf for my daughter out of beach wood. During assembly I realized that there are at least two possibilities of bringing the pieces together (with all joints connected). This is the reason why i called it a Puzzle Shelf! Are there more ways? I don’t know, please let me know if you see any!
Making a letter opener case from balsa wood. My opener ended up being about 6 mm thick. I had some scraps of balsa wood with exact the same thickness, means perfect for this build. I’ve used PVA glue to hold the wood pieces together. The neodymium magnets (8 mm diameter, 4 mm thick) are glued in with epoxy. Yes, drilling these holes might be tricky, but not impossible.