The set of toys I spent the most time playing with was a big bag of wooden blocks my grandfather gave me when I was very small. They are well designed, with a good selection of different shapes, e.g. it has cylinders and arches and thin planks as well as cuboids. They got a lot of use because they're so flexible in combining with other toys, e.g. you can build roads and garages for toy cars, or obstacle courses for rolling marbles. The edges and corners are rounded and the wood tough enough that clean-up was just dropping them back into the bag.
I've since given them to a nephew and I'm happy to see he gets just as much entertainment out of them as I did. Plain wooden blocks can represent almost anything. There are no batteries or moving parts to fail. Mine got a little bit of surface wear but they still work just as well as they did when they were new and small children don't care about perfect appearance. I wouldn't be surprised if they end up getting passed down to another generation and continue to provide the same entertainment. I highly recommend this kind of simple toy for young children.
I've since given them to a nephew and I'm happy to see he gets just as much entertainment out of them as I did. Plain wooden blocks can represent almost anything. There are no batteries or moving parts to fail. Mine got a little bit of surface wear but they still work just as well as they did when they were new and small children don't care about perfect appearance. I wouldn't be surprised if they end up getting passed down to another generation and continue to provide the same entertainment. I highly recommend this kind of simple toy for young children.