What hiking/travel/outdoors gear do you use in your everyday, non-/out/ life?

Even when I'm in a city, I wear my hiking jacket on a rainy day as it's 100% waterproof. Same with my hiking cap and thermal underpants. I even consider using the scrubba wash bag as the only washing device since my new apartment doesn't have a washing machine yet. I might even switch to a silk Cocoon TravelSheet as my primary bedsheet to maximize my retarded minimalizm.
Tell me about your gear.