I used to love riding around the pasture. With a horse who views the world as one giant scary place, getting out of the arena was success in my mind.
When we cut back on riding due to college, one of my favorite things was (and sometimes still is) to just ride with no ground warm up and see how we'll do. As he's matured, he's gotten so great about being able to handle this with months off.
Law school was an even bigger change with not being able to go home frequently anymore, and now... boo, joining the real working world. I'm just happy to groom them while they're grazing in the pasture, give them kisses, and breathe that intoxicating horse smell.