I Restored This 2$ Ebay Junk Original Game Boy - Retro Console Restoration & Repair
After a while of searching, I was able to find a bad enough Game Boy for my restoration videos only for $2.
Refurbishing An Old And Dirty Game Boy With Budget RetroBrite
How to refurbish a yellow old Game Boy. Massively impressed with these results. From a knackered old yellow Game Boy, to a bright and cheery best in the show.
This method is applicable to basically all retro computer and console cases that have turned yellow, and it's well worth the elbow grease.
By Retrobrite, by using hydrogen peroxide, you can get amazing results