Birdhouse Kit

Goal Unscrew every screw into a jar of its color and build the birdhouse.

1. Tap a screw to unscrew it. It goes into the open jar of its color.
2. No open jar for that color? The screw waits on the tray. The tray has just enough spots, so park only screws whose jar is next in line.
3. A board on top holds down the screws below it. A board left on one screw swings and can cover others.
4. A full jar closes and the next one slides in, taking its screws from the tray. Brass pins never come out, rusty screws take two taps.
5. Fewer undos, more stars.