TL;DR: I've put together a small-ish Emacs configuration that I call MES. Hopefully it can be of use to someone out there.
My Emacs Setup - MES
The other day I started watching some videos in the Emacs From Scratch series from System Crafters. It looked like something that could be fun to play with so over the last couple of days I've been tinkering with putting together the beginnings of a configuration.
During the process I realised just how much work it'd be to put together something that comes close to the polish of Spacemacs, so I've currently no intention of actually using MES myself. It was fun though, and maybe it can serve as inspiration (or as a deterrent) for someone else.
The major parts are