I lost the back off a stud earring last week. Looked for it everywhere, as I like these tiny gold backs.
Then I was cleaning upstairs - and sent my Roomba to find it!
And it did. So I had to root though the dust it collected, it was worth it.
Save water, use the cold that comes out before the hot water. I put it in some jugs, and it runs three litres before it comes hot.
So, I then have 3 litres of slightly softer water, at room temperature when left. What for? Water house plants.