I hope e-bay outings of one's own stuff still are cool on this list... here are a few things I put on e-bay recently:
Daniel Rebour book: Cycles de Competition et Randonneuses Campagnolo Super Record Seatpost 26.2 mm, excellent Campagnolo Nuovo Record Pedals NOS/NIB Campagnolo Record High-Flange Hubs NOS/NIB Campagnolo Euclid MTB Derailleur NOS/NIB MAFAC Tandem Cantilever Brakes NOS/NIB Shimano Bar-End Shifters, 7-sp NIB Campagnolo Nuovo Record front derailleur, NIB/NOS Alfredo Binda Super toestraps NIB/NOS
Item No. 7116855312 to get started, or search for seller name "jan_heine"
Jan Heine, Seattle