Nothing matches that combination.
Things worth building when no client work is rolling. Every one of these is startable today, alone, without asking anyone.
Named for Kalkkiranta. Limestone is what happens when small things settle in the same place long enough to become rock.
Filter by how much time you actually have. Nothing here is longer than three days.
Read Start here. It names the repo and the first real step, so there is no blank page.
Say in the team chat which one you took, so two people do not build the same thing.
Ship it small and show it. A rough working thing beats a perfect plan every time.
Nothing matches that combination.