Back a few years ago, I ventured into making my first PCB in over 2 decades. it was motherboard to hold a raspberry pi zero, and fit within a zx spectrum case.
it was inspired a little by an article in MAGPI magazine by a Mr P J evans.
I did kind of goof it up a bit, so relegated that to the ‘ideas to do in the future’ drawer
Whilst perusing Kickstarter today, I found this –
https://www.kickstarter.com/projects/hermitretro/hermit-retro-zx-spectrum-board?ref=thanks-copy
The Hermit Retro ZX Spectrum Board
A custom board for original and reproduction ZX Spectrum cases powered by a Raspberry Pi Zero and the Fuse emulator

So I backed it!
Have a look 🙂
it’s a far more elegant solution than I came up with.