I won't bring my netbook, or as many books. I have a Nook Color that can do both. Also, I won't bring all the stuff I brought last time to "fix" any problems in the room, such as this list from last time:
1. A small flashlight – for use at night or to see stuff dropped under seats
2. 3 or 4 large pins like the diaper pins or safety pins (this is to keep the curtains closed at night)
3. Some small snack packs for nibbling
4. A roll of transparent tape
5. A very small sewing kit
6. A few Band-Aids
7. A few rubber bands
8. Moist towelettes.
9. Take along 12" or so of duct tape, wrapped around a ballpoint pen. Use the tape to silence any squeaky panels or fixtures inside your roomette. Bring even more, and some heavy folder-type paper, to cover excessive vents.
10. Wire - 16 or 18 gauge, to hold door shut
I think some of this stuff might be handy to have for frequent travelers. Since I'm only going to be on the train for two days, I figure if something breaks I can either get an attendant to try to fix it, or live with it.