For those who need to print pictures off their Game Boy Camera but don’t have a cable or might be in another room (I guess?). The Game Boy PocketPrinter (or Game Boy Printer outside of Japan) was released in 1998 and went out of production in 2003. With this mod by davedarko, and demonstrated by limonevirus (리모네공방), you can now print almost anything wirelessly.
The Game Boy PocketPrinter (with added WiFi)
Now you’re printing with WiFi power!