Heres a nice big list to add to this thread:
Consoles:
Microsoft Xbox (Green) (Modchip & HDD)
Microsoft Xbox (Green) (Softmod & HDD)
Microsoft Xbox 360 pro (White)
Microsoft Xbox 360 S (Black)
Microsoft Xbox One
Nintendo Wii
Nintendo Wii U
Nintendo Gameboy
Nintendo Gameboy Advance
Nintendo DSi (+R4 Cart)
Nintendo DSi XL (+R4i Cart)
Nintendo SNES (+ Everdrive Cart)
Nintendo 64 (+ Everdrive SD Cart)
Nintendo 64 (Transparent Blue)
Nintendo 64 (French - RGB output modified)
Nintendo GameCube (Silver)
Sega MegaDrive (+ Everdrive SD Cart)
Sega MegaDrive II
Sega Mega CD II
Sega Dreamcast
Sega Dreamcast
Sega Saturn
Sony PSOne (Modchip)
Sony PS2 (HDD mod)
Sony PS3
Sony PS4 1TB
Sony PSP 1001 (Modded BIOS)
+ Loads of games with each
Arcade Machines:
325 in 1 motherboard (vertical/horizontal)
138 in 1 motherboard (vertical)
138 in 1 motherboard (horizontal)
Neo Geo MV-1B motherboard
Neo Geo MV-1FZ motherboard
Neo Geo MV-4F motherboard
Neo Geo MV-6F Motherboard
Neo Geo MV-6F Motherboard
Computers:
BBC Model B (+internal SD card reader)
Microvitec Cub Monitor
Commodore Amiga 1200 (+ internal CF card loader)
Phillips CM 833 MKII monitor
Commodore 64 (+ external SD card loader)
Commodore 1701 Monitor
(whole collection is currently in the loft in 18x Really useful Boxes)
other items:
Analogue Interactive Neo Geo CMVS
http://imagizer.imageshack.us/v2/1280x1024q90/922/7LmyNh.jpg
A Neo Geo MV-1C motherboard consolized
Mini MVS Arcade Machine
http://imagizer.imageshack.us/v2/1280x1024q90/922/n5j8DL.jpg
http://imagizer.imageshack.us/v2/1280x1024q90/923/rRV6KX.jpg
completely hand built, using MDF and arcade buttons 15" LCD Screen and a Neo Geo MV-1B motherboard
Retrocade – 19” PC Based Bartop
http://imagizer.imageshack.us/v2/1280x1024q90/923/7IvXG1.jpg
http://imagizer.imageshack.us/v2/1280x1024q90/922/SMS5xk.jpg
Hand Built running an i3 PC, 19" LCD screen - running hyper spin front end with over 18,000 games installed
Watchmen Themed Digital Pinball Table
http://imagizer.imageshack.us/v2/1280x1024q90/540/4GhtQg.jpg
http://imagizer.imageshack.us/v2/1280x1024q90/661/56J619.jpg
http://imagizer.imageshack.us/v2/1280x1024q90/661/VEk96g.jpg
Hand built (over 3 years)
Watercooled i7 pc with GTX780ti
running Visual pinball (currently has 25 tables installed - can run hundreds) - hyperpin front end
full force feedback installed (so you feel vibrations of the ball hitting bumpers in the game)
Play field is a 40" Samsung TV.
So in all, have a difficult choice to pick a game to play, when i fancy a change......