Earlier this week I was looking at my Buz set (Australian-made version of the Meccano) and wondering what to do with it. I got it about 60 years ago. It's a large 9/10 set in a metal box like this:
https://www.aulro.com/afvb/images/im...015/10/295.jpg
It came with an open frame electric motor which we used to run off Dad's Scope soldering iron transformer.
I don't have any grandchildren to pass the set on to.
For making buildings, we used the Aussie made Bilda Brix which came out in the late Forties/early Fifties.
Bilda-brix, the 1950s Australian Playmate construction outfit