I think my favorite toy as a kid was always the wood blocks. We had two different sizes, and the main one we used to call Jenga blocks (like the game), even though in hindsight they must have been some other brand. What made it so special to me, was how it could be used in so many different ways. My brother and I used to build huge towns, and the blocks would become walls, towers, trees, traps, etc. or you could just use them by themselves and create the biggest possible tower. One time, we created a huge tower right next to my bed, and after almost reaching the ceiling, we didn’t want to destroy it. So in the middle of the night it just all crashed down and woke me up.