When grandson was about 1 yr old I bought this suitcase full of Lego for £10 from a charity shop, it was in an old type suitcase you know the cardboard type.
It had lots of I suppose what is vintage Lego, not sets but all different parts, wheels, cogs, windows, people, etc,
He had great pleasure out of it, he is now 17 and not remotely interested of course lol. Other younger grandson who is 9 has never really been into Lego ,don't think he has the patience.
I did start sorting it all out as some rogue bricks got mixed into the original Lego. It kept me quiet for weeks it was like therapy lol.