Oh. My. Gosh. I haven’t heard of those in years, or even seen them. I also had them, and they were a lot of fun. You could build a house out of Lego, but you’d never fit inside, like you could in the house you could build with Flintstone Building Boulders.
I also liked my Rock-em-Sock-em Robots. Many of the toys I once owned were lost or discarded along the way, but somehow or other, through many moves, I’ve managed to hang onto my boxing robots, and they still work.
When I was about nine years old, a new kid moved onto our street, and he had the most amazing HO-scale slot car setup. Not just an oval track on the basement floor, his was about six feet long by three feet wide, on two levels connected by ramps, and with landscaping made out of plaster. Naturally, even though his was the only track in the neighbourhood, we other kids all had to have our own cars, and we raced them daily, after school.