The other one I know of is the Cardputer: https://www.cnx-software.com/2023/10/14/m5stack-cardputer-a-30-card-sized-esp32-s3-computer-with-display-and-keyboard/

The other one I know of is the Cardputer: https://www.cnx-software.com/2023/10/14/m5stack-cardputer-a-30-card-sized-esp32-s3-computer-with-display-and-keyboard/ https://www.cnx-software.com/2023/10/14/m5stack-cardputer-a-... And the various Gameboy clones like the Odroid Go. I've been really wanting to do something with this kind of thing for a while... but I'm not really sure what, just that I want it to work with ESPHome somehow.