Mine was a police car. I remember getting it for Christmas when I was super little and feeling very excited when I finished it (with my dad's help) and could roll it forward.
My first lego set was a lego city jet, me and my dad worked on it, for some reason, one of the turbines would fall off constantly, and every time it happened, I would have to reattach it. Eventually, the whole thing just kind of fell apart on its own, I don’t remember how old I was, I think I was about 3 or 4. But I still remember working on it with my dad.
