Watch Mods
I like wristwatches, and a few years ago I got into modifying Seiko automatics. I've made a few.
Some of the more interesting tools below - I use a piece of software as a timegrpapher. It listens to your watch and reports any beat error in its operation, and can tell you how accurate it will be long term.
The small tool on the notecard is a hand puller - you use it to remove hands from a watch when disassembling them. I also have a few hand pushers.