Oldest tool I use on a somewhat regular basis is a wall mount hand crank grinding wheel. I mounted it in my shed at the cabin. Clean up edge on my maul and wedges. Occasionally a mower blade. A shop owner was selling off his stuff and moving south ( big suprise). I was there to buy a set of bits for my drill press. I left with all kinds of stuff including oxy/acetylene set up and tons of C clamps in various sizes.