If you own multiple self winding watches, you may want to invest in an automatic watch winder. There are many of these devices available; some wind just one watch at a time while others have multiple ports in order to wind multiple watches at the same time.
Resetting Watches
If you own a calendar watch that takes elaborate resetting practices, you might want to invest in a single unit just to make sure the watch never runs down so you save yourself the time of having to reset everything on the watch. It’s always a good idea to have a small screw driver available, you never know when you may need to take the back off your watch and replace the battery, or replace your band should it wear out.
Eyeglass Repair Kit
An eyeglass repair kit is a wonderful thing to keep around, especially if you also wear glasses. The screw driver in the kit is small and refined and will work well when dealing with the intricacies of a watch; it will also do double duty should you loose the screws in your glasses.
Leather Cleaner
If you have a leather band, you may want to have some leather cleaner and conditioner, if you have metal bands, care is easy, mild soap and water will do. In both cases, a nice old overused soft toothbrush will make a handy tool to get between the links of the metal or into the crevices of the leather, making sure you softly clean the band.