My humble collection, all in working order:

C64:

1984 - C64

1987 - C64C(MOS)

1990 - C64C(CSG)

1991 - C64G

+ 1541 Ultimate II, 1541-II

ZX Spectrum:

1986 - 128 +2 (grey model by Amstrad)

AMSTRAD CPC464

1984

Amiga:

1987 - 500 - (Kickstart 1.2 + 512kB + A1010 )

1992 - 1200 - (Kickstart 3.0 + Blizzard 1220 + FPU + CF adapter)

Atari:

1985 - Atari 800 XL

1989 - 1040 STfm (TOS 1.02 GER)

Sony:

Playstation 1, 2, 3, 4, PSP

XBOX360, Sega Megadrive II

Sound Cards and MIDI modules:

Creative Labs: SB 2, SB Pro 2, SB 16 ASP, SB 16 Value, SB AWE32, SB AWE64 Value, SB Live 1024, SB Audigy PCMCIA, Audigy 2ZS, SB X-Fi Ti

Gravis: Gravis Ultrasound MAX 1MB

Diamond Multimedia: Monster Sound PCI (A3D 1.0)

Aureal: OEM Vortex 2 (A3D 2.0)

Other: ESS, Opti, Analog Devices, ...

Roland: SC-88, CM-32L, MT-32

Yamaha: MU80, NEC XR385 (DB60XG or MU50), Yamaha SW1000XG

Other: some generic waveblaster daughterboard

Graphics Cards:

ISA, PCI and AGP graphics cards (eg. Trident 9000 A,B,C, CL, Tseng 6000, S3 Trio, Voodoo2, GF2MX,MX-400, GF4Ti, Ati Rage, intel 740