I wonder, if I wanted to recreate the Gameboy Camera with an emulator...has anyone done this with a webcam and a thermal printer? How hard was it?
If you buy the real thing, there are lots of projects for extracting and printing the pictures though.
This project implements a fake GB Printer that you can then access via WiFi to download the prints: https://github.com/zenaro147/NeoGB-Printer
This project I wrote a while ago allows you to use a printer very similar to the one in this submission as an actual Game Boy Printer, connected to an original Game Boy: https://github.com/iamjackg/esp32-phomemo-gameboy-printer