Other than too many Amigas, I have a
Commodore 128D with JiffyDOS and 512K REU
Commodore 128 with JiffyDOS, GEOS v2.0 ROM, 512K REU, 64K VDP
2x Commdore 64C (non-E motherboard... want... bad...)
2x 512K REU (upgraded from 256K)
2x Commodore SX-64 (one non-working)
Commodore VIC-20 with VIC-1541 and RAM expansion
Atari plotter, modem, and cassette drive
Some Mac stuff (128k, SE/30, iBook G3, PowerBook G4)
A500+ w/50MHz Derringer 32MB
A1000 w/50MHz Derringer, AdIDE, Kickstart ROMs, Fast PALs
A1200 w/Blizzard 1260 192MB SCSI, external SD/FF, wireless, 4GB DoM
A2000 w/Blizzard 2060 128MB CD-RW, Ariadne II, Spectrum 28/24
A4000 w/CyberStorm MKII 128MB, 16MB, Deneb, Picasso IV, USB network and audio, DVD-RW, multi-card reader
Out of service:A600, couple of 500s
TI-99/4A QI (non v2.2) console
Peripheral Expansion Box (PEB) 32K TI-DISK I/O
Peripheral Expansion Box (PEB) 32K I/O, SNUG-DISK, SCSI 102MB
TI-92 graphing calculator
NES w/remote controllers, light gun, PowerPad
Sega Genesis II w/ Sega CD II
Activator, IR remote controllers, Enforcer light gun
Sears Intelligames (2600 clone)
Atari 2600 (w/S-Video mod)
Atari 5200 (2-port and 4-port, S-Video mod)
Atari 7800 (w/ S-Video mod)
Atari 2600 adapter for 5200
ColecoVision with 2600 adapter
I think that about covers it.