My brother (three years younger) got a set of those more than 50 years ago, identical to this, but with a different box. All three of us played with those for years and years. We built roads, we built buildings, we built towers for the baby to knock down when he was little, we raced (manually) Hot Wheels-type cars on those roads we built ... That set of blocks was one of the best toys we ever had. If I had a set now, in my sixties, this old lady would STILL play with them. I can think of several things I would build. And when we were done with them, my mother passed them on to someone else who had little kids. They are nearly indestructible, and they stretch the imagination.