Some time ago I repaired our tumbledryer, but I had to nearly dismantle it because of the way it was put together. I put it back together, and I had 1 screw left that I couldn't imagine where it came from.
It worked well enough so I left it like that.

Currently I am finishing up the guest bathroom. We had the tiles for 5 years, but not the time to put them up. We also had little glass mosaic tiles that we were going to use as well. Our ideas changed in the meantime, and we had not enough glass mosaic. Back to the shop, and the woman at the counter tells me that the supplier rep said that they no longer made them. She ophoned them to make sure of it, and luckily, the supplier still had enough in stock for what I wanted to do.