I've been working on an activity...well truth be known a series of activities for the train set on the PO&N. I picked that route only because it's about the largest, and it's built into TRS2010.
The activities are as follows:
1.) "High Stepping Part 1". Lead the Comet Light version into the yard, stopping at all stations along the way. Sure, this train was built for speed, but you're running the local today. Pick up an extra pair of baggage cars loaded with mail along the way and place them behind the tender. Estimated time to complete: Just under 1 hour. Session ends when the three baggage cars (all loaded with mail) are placed at the RPO track. (I'll designate a certain track for that, as there is no RPO track that I know of on the PO&N) Light to moderate traffic.
2.) "High Stepping, Part 2A" Now that the Comet has come in, and the locomotive pulled off to be turned and refueled, you're tasked with using one of the diesel switchers to pull the train away and sort it into the coach yard. This sounds easy, but you have to turn the observation around, line it up on the station track, and then build the train in the proper order. That, compounded with having to tack on the baggage cars that just arrived. You've got a time limit on this one. Don't make the express late! Light through traffic, estimated time to complete: Around 30 minutes. (That's all the time you actually HAVE to complete it.
3.) "High Stepping, Part 2B" With the train now complete and the diesel off in a siding, it's time for you to take the Blue Comet locomotive (the blue one) and couple it to the train. Do this GENTLY, we don't want to make the chef in the dining car mad now do we? Once the train is cleared to leave, you've got a long sweeping express run, with no less than SIX major stops. You're running against heavy traffic here, and though you're a hotshot, you've still got to let a couple of fast express freights pass. Can you do it and keep to the schedule, getting the passengers to their destinations on time? Estimated time to completion: 2 hours.