In kindergarten, a small suction-cup hourglass. The suction cup has already decomposed, but the rest is fine.
Yes, I still have it.
Unlike the pony from MLP (Twilight Sparkle) I had to “borrow” forever to someone else from family because I was a boy and had no business having a “girl toy”. I also stole it in kindergarten. It was small, hard plastic figure coated with some plush-like coating. It was worn off at bottom of the legs.
I still remember it, I didn’t forget. Ironic. What I stole was stolen from me.
I personally don’t like the idea of maximum age. Someone can very well be mentally OK even in their 90s.
Rather a mandatory psychological evaluation.