List of Indie Handhelds for hobbyist game making

Hmm. I wonder if this part is sensible:

> Must be programmable by the end user (No LCD Games, Or Clone Consoles and Emulation Boxes that aren't for Homebrew)

I got the RG280V (https://maya.land/rg280v/) expressly for homebrew Game Boy games and PICO-8 games. And it's great! I'd recommend it to anyone for the same use.