Cover plates might a pretty good item. To cover those old tom and bass mount holes etc..... drilled long ago before we aquired them. Rogers, Pearl, Ludwig etc...... People are sometimes looking for a cover plate if they are unable to fill and repair the holes. I think someone is making a Rogers plate but at $50 it's pretty steep.

Floor tom legs and bass drum spurs can be good too. Straight and curved. Add the proper round over or spike ends and knurling.

You can start with a few simple items and see how it goes.

Jim Petty makes some incredibly accurate replacement drum parts that are more substantial than the original equipment parts. . They are mostly for discontinued drum brands such as Rogers and Slingerland. There is no one to sue him for replicating prts that have not been manufactured for several decades. Out of necessity, these parts are expensive because of the hand labor and the chrome plating. The desire for the parts and the orders for them vary greatly. I would not recommend getting involved in this. The parts sellers online and at drum shows are doing pretty well. Even the vintage drum buffs who ***** about them being parts strippers will buy the hard-to-find doo dads from these vendors that they need to complete a drum or a drum set. While we're at it, what's so dfferent about buying vintage drum parts from these guys and buying vintage auto parts from wrecking yards and online?