For Buddhists (and anyone like-minded): if you have been going for walks, and you live where pindapata/takuhatsu is not a thing, and you pass something like a Little Free Pantry along your route, carry a little appropriate something with you, bow to the pantry, put in the something, bow again, and be on your way.
Don't think about what just happened. Just admire the shadows of trees on the sidewalks and the singing birds. Everything is the same as everything else in the realm of giving and receiving.
-- shonin