I was using Obsidian for this, but gosh, 4 or 5 Electron processes just for throwaway notes seemed like overkill. Neovim is a better fit but I like it just the way it is for coding and didn't want to install any image plug-ins for that.
mib is a bit like a basic Vim editor, with a few Obsidian features cherry-picked and a workflow optimized around scratch notes (with just 9 glorious pages - no files or folders to organize).
It's called "mib" because it is, and always will be under 1MiB (currently < 300KiB). Its a fully local, native app that is smaller than some JavaScript frameworks.
Disclosure: I still write a lot of code by hand but this project is 100% AI generated (Claude and Codex). I was a tough taskmaster though - we worked through a lot of approaches to arrive at something this small.