Well done on all counts! Firstly I sincerely believe that the scout movement is a great character building experience for youngsters. Both my sons enroled as cubs, and now as adults retain an excellent circle of friends as well as continued involvement in the organisation.
Secondly, yes that sort of thing does engender a lasting interest. I myself started messing around with batteries at a young age, encouraged by my Dad, and went on to an engineering career.