My DH accidentally left the toilet seat up in the guest bathroom last night. (In his defense, he’s done this less than 10x in the last 5 years). This morning, when my 3-year old DD went in to pee, she said “Dada forgot to put down the toilet seat again” (she said “again” in an exasperated tone), then she got some toilet paper and used it to put the toilet seat down.
It was one of my proudest moments. She had the presence of mind not to touch the toilet seat.
P.S. This toilet in the photo is not ours. It is a free image from Wikipedia. In fairness, this toilet bowl is quite clean except for some yellowish stains which are probably due to constant exposure to chlorine in the water. The photographer cleaned it well before taking a photo.