Even at the ripe young age of 83, my dad is still fixing vacuums and sewing machines as part of the repair business he started 30 years ago after retiring from a career at Western Union.
He no longer runs the business from a shop, and he certainly is nowhere near as busy as he once was -- due mostly to the fact that you can replace the devices far easier then repairing them -- but he still manages to pick up a job from time to time to keep himself busy.