Being a retro video games fan, I recently had to customise a unit to store them all in. This is what I own so far starting from oldest
Atari 2600
MB Vectrex
Commodore 64
NES
Sega Master System
Sega Mega Drive ( with Mega CD attachment )
Super Nintendo System
Amstrad GX4000
Atari Jaguar
Sega Saturn
Playstation 1
N64
Sega Dreamcast
Playstation 2
Nintendo Gamecube
XBOX
Playstation 3
XBOX 360
Nintendo Wii
Playstation 4
XBOX One
These are the handheld consoles I own
Sega Game Gear
Nintendo Gameboy Color
Gameboy Advance
Sony PSP
Nintendo DS
Gameboy Macro ( this is a customised one, not official. Does that count? )
And these are the console I am still hoping to get
HOME CONSOLES
Sega SG-1000 ( Sega's very first console released in 1983 but only in Japan )
Sinclair ZX Spectrum
Amstrad CPC
Atari ST
Commodore Amiga
Amiga CD32
Panasonic 3DO
Phillips CDI
HANDHELD CONSOLES
Sega Nomad ( again, not official )
Atari Lynx
Nintendo Switch
I also have posted a video onto YouTube of the unit I built plus the consoles I had collected thus far.