For Eeper (admittedly not out of junk) I've made:

• A phono lead signal splitter (for bi-amping his speakers).



• A linking connector for Alvaro's/his train set; out of a rather heavy duty industrial multi-pole connecter.



• A points switch box; again for the train set.

For myself, I did ponder upon a plan to cobble together some LED plug-in nightlights, until I worked out how much they'd actually cost.