I'm almost ashamed to think about it but I'm a hopeless gadget-head too:

1. Early Sony ES player (gave to friend)
2. Sony 5-CD carousel changer (ex took with her)
3. NAD player with compression circuit (nice feature for making car tapes - I still have it sitting around)
4. early Sony Discman
5. newer Sony Discman (stupid battery died and costs $40 to replace)
5. Sony desktop 3-CD/minidisc system
6. Sony 200-CD carousel (for sale)
7. early Denon DVD player (now fails to read discs)
8. Samsung DVD player
9. Teac player in recording studio, pawned by my stupid musician friend

Do minidiscs count? That would add two more devices.