GB-80 case loaded to the gills. Now if I could only find some cheap official Gameboy Earbuds and a Gameboy or Zelda themed microfiber cloth. : r/Gameboy
Game Boy Headphone Jack Replacement - iFixit Repair Guide
GameBoy Stereo Headphones (New) from Nintendo - Nintendo Hardware
GBA SP Gameboy Game boy Advance SP Earphone Adapter Black (allows you to use your standard earphone on GBA SP) : Amazon.co.uk: Electronics & Photo
Gameboy Advance SP GBA 3.5mm Headphone / Earphone Jack Adapter Cable - UK | eBay
GBA SP headphone adapter by Gamester. This one still allows access to the charging port. :) : r/Gameboy
These original gameboy headphones have a familiar colour scheme.... : r/casualnintendo