I purchased a watch box with a movement mechanism off of Amazon a few years ago.
At first I was thinking it's a pretty silly gadget, but I've come to love it! One of my better watch related purchases.
Before it was "Damn, I have to set the bloody watch again - Let's take the Quartz", now the watches just keep running. I even have to read the manuals for my more sophisticated watches because I forget how to set them properly