Used to think they were overkill, but finding that one short in a minute instead of an hour totally changed my mind.

My grandpa's old truck still runs on duct tape and hope.

Honestly, I started doing the one treat thing a few years back. It sounds silly, but I set a rule for myself that I have to say yes to the first thing they ask for, as long as it's under like two bucks. It completely changed the whole checkout vibe. They don't beg for ten things anymore because they know they get the one pick. It saves my sanity and feels like a tiny win for them.