They are from the Japan Pavilion at Epcot. I am going to pretend that the Japanese words on them say "chew, chew, chew!" or "stop eating when you get full!" They hold only about one cup of food. Perfect!
I can add them to the mini plate/bowl shelf in the kitchen.
I know that I've been eating sensible small portions for the week when I see the dishwasher full of them.