Shaving! Many people on the shaving forums, such as Badger and Blade, consider it a hobby. There are many kinds of razor to buy and use, or to collect, plus a wide variety of soaps, creams, brushes, aftershaves, and colognes.Exactly. The goal is to have something you can do in the evenings that improves the brain and hand dexterity, and does not require being on the web and getting sucked into whatever brainless entertainment it offers.
The drawback is that, depending on your beard and skin type, you can only do it up to 7 times a week. (Some of us might need to shave 2x a day, I guess.)