Power napper here. I nap daily, and sometimes a couple times a day. I can fall asleep easily, and nap for 15-20 minutes and I'm good.
When I worked in an office, I would take one after lunch every day. When I had my own office, I would just shut the door. When I was sharing an office, I would either go to my car, or just take one right there. I would tell my office mate I was taking a nap, and she would actually just shut the door to our office and keep working.
Working from home, I may take one mid day, and if not, right after work.
When I have a long drive, say driving home from my son's (3 hours away), I will go to a room and lie on the floor for about 15 minutes. If I get tired driving, I pull into a rest area and set my phone for 10 minutes. My wife has timed me and says that I am usually asleep within 2 minutes of setting the timer.