Sometimes I need to do something different. It refreshes me to use my mind in a different way! Then, when they're done, they make nice little gifts for friends.
Doing origami also reminds me of my "little" brother (which I persist in calling him despite the fact that he's at least 6" taller than me), who has been an origami expert for years. One time, when I visited him while I was on a business trip, he made me a phenomenal origami bird with fluttery wings. I still have it.
Trio of Cranes