Here's mine at one of our modular club layouts:
It's a K-Line Nabisco Circus train (I think it was missing a few cars when I bought it) that I added a postwar giraffe car, a more modern elephant car, and a Franks Roundhouse Animal Crackers boxcar to. I've since added a second Animal Crackers car to it.
It seems to be a somewhat popular train to run; not Thomas or Polar Express popular, but it gets a few smiles each time it's out there.
J White