Any idea that pops up in your head needs to be captured, while you’re in the market or reading or doing anything.
These are supposed to be worked on and new ideas inserted into The Slip Box in a day or so. Idea is to keep deleting these notes.
I use Obsidian on my phone for this. It syncs up to other places I take my notes in, using Syncthing. This makes the transition into the slip box possible on my phone as well as on my desktop.