I'm perpetually saddened because I work in aerospace where the IT policies are quite restrictive due to security clearances and whatnot, so I'm stuck on windows and can't install emacs :(
Every few months I toy with the idea of implementing a poor man's org-mode in VBA.
Emacs doesn't have to be installed on Windows, strictly speaking... you can run it out of a subdirectory without using an installer. IIRC the Windows installer just sets up some registry keys that make life a bit more convenient, but they aren't blockers to actually running the application.
That's tough, especially because emacs + org-mode is most usable when combined with a few melpa packages. Even if you could get emacs installed, you'd (probably) want melpa packages to make it more usable.
Every few months I toy with the idea of implementing a poor man's org-mode in VBA.