In addition to modding systems and making controllers, I like to make my own retro systems.
Introducing the Konix RCP-2000 RCP is for Retro Computing Platform.
I used a Raspberry Pi 3 A+, 5V power supply and a 4400mAh (11.4V) battery to make this a dual power system. It even has stereo sound.
I went with wood grain and wireless SNES style controllers. Enjoy!