Here at the MIM, a place to restore:
A really nice maker space
This workshop is used to restore musical instruments; it looks so clean and new. Not sure if they have an actual X-Ray machine to see inside some of the instruments or would they just rush the instrument to the Mayo Clinic just down the road?
Gong Making done dirt cheap
OK, not quite my basement, but close. A gong is probably just as hard or harder to make than a steel band drum. If you can get an alloy of about 80% copper and 20% tin, make a bronze pancake out of it, then shape/tune, repeat. Then you will have it.