I had a basic microscope as kid – sturdy little thing with a mirror and light source and three optics. Came in the little kit with slides, balsam, and stains. I'm to this day not sure why or how I got this considering my parents were never especially interested in my proto-academic endeavours.
But anyway, it was the best. If I had a kid, I'd buy one for them. Then take it off it off them for me.