Congrats to the winners!
A little housekeeping first: I just realized the reason I haven't gotten pinged is that you have my name with a typo in your list: I am @curatorcat.pal not @cutatorcat.pal.
With that out of the way, my favorite toy growing up was the Spirograph, in part because we traveled a lot and it was small and light and could easily come with us, but also because geometric patterns have always fascinated me.