Maybe the dad in your life is not a computer guy, maybe he is a “grease monkey”. If your dad spends a lot of time in the garage breaking and fixing things he might like a wrench wind chime. Go to a thrift store and look for a set of small and inexpensive wrenches. Get one larger wrench. Use fishing line or dental floss to hang the little wrenches, vertically from the bigger wrench. This will be a unique gift for your unique dad. Experiment with the size of the wrenches. Different sized wrenches will make different sounding chimes.