"Well, I'm done with this now" is a very nice, simple, and most importantly obvious addition to a mental model that will translate to things they've been doing

"Well, I'm done with this now" is a very nice, simple, and most importantly obvious addition to a mental model that will translate to things they've been doing since they were toddlers. It has consequences, but it's first week sort of thing because it's so easy/relatable.