Stuff I've owned at some point or another. Mostly synths and drum machines, aside from that one ibanez guitar:
DSI MoPho
DSI Tetra
DSI Prophet 08 SE
Access Virus TI Polar
Novation K-Station
Casio CZ-101
Korg MicroKorg
Korg ER-1 mk1
Korg ER-1 mk2
Korg DDD-1
Linn LM-2
Oberheim DMX
Roland R8
Roland TR-707
Boss DR-202
Akai APC40
Akai MPC 1000
Akai MPC 2500
Akai MPC 2000XL
Ibanez 540S LTD

and a slew of FX pedals.

I've sold most of it. Now I just have the APC40, MPC 2000XL, MoPho, and Tetra, along with my computer, preamp/interface, and monitor speakers. Simplicity feels good.