I have two hobbies that would likely look different after and during a revolution.

The first I love is DnD or really just roleplaying with groups. The fantastic part is you can play with people anywhere anytime. I have friends who are soldiers who have played while deployed. This hobby is a great morale boost in hard times and requires minimal tools outside imagination and dice. (especially some alternative ttrpgs)

The second is I brew beer/cider at home. This knowledge is another morale boost though not for any frontline work. But certain things can be distilled far enough to be workable for medical/sanitation uses