I use various Etsy sellers for the labels, but mostly Matthewmods now for quality consistency. The pinball PCB was from AliExpress. The blue shells were also AliExpress but different seller. Prism is an MBC3000 by Benvenn. The two Tetris carts and Zelda have legit Nintendo PCBs, modded to use FRAM for saving without battery. I assembled them myself.
btw i feel this a good time to remind you guys that sea of thieves was made by rare, who also made DKC1-3 and DK64, alongside banjo kazooie and conker's bad fur day