There is a Zen-like quality to the time spent waiting for your mechanic to work on your car. If it’s a short enough job, say a few hours, it’s an ideal time to nourish creativity. I use a shop where they have no tv in the waiting room, which is to me, ideal. Bring a notebook and sketch out article ideas. Write a scene for your novel. Browse the magazines to scope out markets. Do character studies of the people wandering through. Listen to conversations and take notes. It’s ideal downtime to stretch the mind.