A Raspberry Pi loaded with Retro Pi and a 128GB SanDisk micro SD card, fully loaded with stuff.
Comes with a projector and stand to project games to a blank wall or projection screen.
I used to play Donkey Kong 7 feet tall on a living room wall. :)
Also comes with a Hot Rod joystick bank that can be programmed in Retro Pi any way you wish depending on what game you are playing. It is easy to do inside Retro Pi. I also had a crappy basic keyboard to go with it, but a cheap Logitec wireless would probably do better.
You can also just use an HDMI cable to play arcade games on your tv.