Hawai'ian music, especially slack-key guitar. (Even when there's grief involved in that -- Last night DH and I went to a memorial concert for the late Dennis Kamakahi, done by a half-dozen guys he'd fostered, musically, including his son. Tears and chickenskin.)
Birds, outside, natural places with as few other humans as possible.
Getting my hands in the dirt, or at least on plants; pruning trees, e.g.
Back in the day, I'd come home from a shift at the hospital and make bread. Pounded the bejeebiz out of the dough, and when the process wa all finished, I had fresh bread!