Earlier quoted context omitted.
Things from my youth, as well as conkers: - marbles (can you get them anymore?) - kick the can (where would kids get cans today?) - British bulldog/chain tig (far too dangerous) I can't remember the rules of these, but they were very popular in the early 1960s, when I played them.
Elaborate marble runs are very popular, although many people use steel balls instead.
One is an engineering (lite) exercise, the other is a game of vague dexterity to take someone else's marble collection.