My son asked the wife last night if he could have a train under the tree. Wife told him to talk to me (I was at work, so he was asleep by the time I got home). I may need to grab a few pieces of O36 track before I can make it happen, but I'm hoping that I have enough to get it done tonight. It won't look half as beautiful as the setup's you all have been posting, but perhaps - over time - my son and I can make that happen.
Was trying to think of what train to have run under the tree ... and I'm thinking it probably has to be my LionChief Thomas.