I know a few farmstands here that operate on the honor system. Put $5 in the box, take your bag of apples. You have to go a bit out of your way, but they do exist in the States.

These exist all over in the U.S. There are easily hundreds in my area, though I only frequent a dozen or so.

Lots of farm stands in NY’s North Country operate like this.

With Zelle, etc, there’s no box of cash sitting out and you don’t need to worry about making change.