Anyone have any older lathe tools appropriate for turning plugs that they no longer want or need? Also interested in drill bits for thru-wiring.

All you need is a 3/4" or larger roughing gouge, parting tool, and 3/4-1 1/4" skew. Check ebay or craigs list. M&D's has the bits I think, or get them from Fuller Drill or Mcmaster/Carr.