I always enjoy hackers who build items that have been mass produced for years. Take Charles Altmann’s DIY Turntable. Audiophiles would have to pay an arm and a leg to get something this unique. The base and platter are made from stacks of plywood. The spindle is a Harley-Davidson Shovelhead intake valve and guide. The motor drive is actually a stepper motor. Precision speed control is provided by computer generated sine waves. His homebuilt tonearm was what got him interested in building the entire table.