7 y/o: I'd make up wild stories to tell kids about my great grandma (who I never met). she was a fearless jungle explorer who tamed tigers. she was also an inventor & invented a pencil with "rubber" lead; after writing with it, you could move around the markings with your hands.
8 y/o: class gathered before a field trip to hear the rules, one of which was "no gameboys allowed". not knowing what a gameboy was yet, but needing to *thoroughly* understand the bounds of the rules, I raised my hand and asked "what about gamegirls?"