I can't really think of anything in particular, but I do recall vaguely when I was young - about 2-3 - and my family were in a bit of financial trouble for a short while. My mother couldn't really afford many toys or educational aids, etc, at the time. I was a very fast-developing child, and I really needed something to stimulate me. So while I was never very materialistic, and can't remember ever REALLY WANTING anything in particular, I do have memories or echoes of what I have to call intellectual starvation, in which I just wanted something
sophisticated to play with.
Luckily, my mother soon managed to get me some dinosaurs, which I think cured the problem. What can't you do with dinosaurs?