I haven't bought them many toys; I don't want to buy them tramline toys. The local toyshop is Hamley's; I couldn't see anything in that store that wasn't both a tramline toy, and entirely made of non-recyclable plastic. I had to import the wooden blocks.
When I was a kid, I got a lot of mileage out of Meccano. Even into early adulthood, I was still using Meccano to botch together some project or other. I suppose Lego is the modern alternative; but (a) it's all plastic; and (b) modern Lego is all tramlines kits.
what do you mean by tramlines? i am unfamiliar with that term.
fortunately, it's not just lego anymore. there are a lot of alternative brands that offer a wide variety of sets which offer a lot more flexibility.
(Although, this is more for kids who are 3+, than newborns, of course.)