I'll be adding to this but I have a few things for sale. Miata, BMW (E36 M3) and Jeep (XJ) Stuff.
15" Enkei Miata Wheels w/ 2 decent and 2 bad tires. Three wheels are in good condition with a few light marks, and one wheel has moderate curb rash on 3 spokes $200
Miata (NB) Enthusa Muffler great condition light surface rust on flange $175
Jeep "Moab" 16"x8" wheel (Wrangler TJ Rubicon) in great condition with two light scratches $150
Bridgestone Dueler AT 245/75/16 (~31") great condition I would guess 75% tread left. $80
I also have a fairly well used set of EBC Green Stuff pads for an E36 M3 (front and rear). If I had to guess I'd say they have 30-40% left which is still a lot of miles. I have pics, let me know. $40 for the set