I'm thinking of getting myself one of those teeny weeny train sets (z scale).
Growing up, I played with various train sets and my interest in them suddenly rekindled recently as I was searching through various brands and sets to get my grandson for Xmas.
As an adult during my 30's I bought a nice Bachman set specifically to go around the Xmas tree. That was a huge set, the cars were G scale. I eventually sold that set..... wish I hadn't.
Now, I've got my eyes set on a miniature starter set that I can set up on the corner of my desk. I'd like to eventually start adding scenery to it as well. Fun, fun....