The Retro Lite CM4 is a passion project by two modders StonedEdge and Dmcke5, inspired by the Switch. This emulation handheld is based around the Raspberry Pi CM4 and RetroPie.
While sharing a very similar look to the Switch, this thing is been built from the ground up, with a custom machined shell, PCB, and various other components. There's an optional custom dock with an integrated LCD, that can show the current game's cover art.
Personally, I think this is absolutely impressive. Hats off to these guys!
Picture grabbed from the GitHub, which is also linked below
I like the styling (but my hands are tiny so the switch actually works for me). I've got a AYN Odin for emulation and I generally really like it. The Dpad is a welcome change when compared with the switch. I still don't understand how Nintendo didn't put ~~our~~ out special edition joycons with the DPad on the left one.