Not OP but boxypixel is a company that manufacturers alluminum shells and buttons for consoles. You buy directly from them. They also stock a lot of the screen and other upgrades. (USB c charging is the best) I've done their GBA and their Gameboy color and have been thrilled with the results.

Just wanted to chime in with a positive review of the Alice 98. My wife didn't want to go through effort of relearning to type on an Ortho keyboard and, as a finance professional, she's tied to her numpad. The Alice 98 has been a great step into the mech keyboard world for her. Finding keycaps can be tricky but there are still a good range of options. All in all, would recommend, for someone hoping to duplicate the layout of a Microsoft 4000 but with much nicer feel and sound.