Solar boys with solar toys
For me part of the joy was watching the children grow up, summer by summer. There would often be a one or two year period in a young person’s life when the goods I had for display on my table, and the solar powered moving models, attracted their interest enough that they just had to find out more. Ours was a hands-on table, and of course children were encouraged to try things out.
The solar beanie kit was being sold in those days (discontinued because of the emf’s) – see the propeller on the top of the demonstration safari helmet.