I had the Erector sets and chemistry sets, model cars, model planes and was lucky enough to have parents that "indulged" my fun. The druggist always wondered what all that
salt peter was for but I think he passed that off to us having a farm. Interesting stuff when combined with ingredients from the chemistry sets. Grew up with a BB gun, even at five, and got a real rifle, Enfield, when I was about 12. That thing had some kick!