I got a On30 tank car which is pretty close (though not exact) to the ones used by the RR I model. I recently found out they still had two of them on the RR in the timeframe I model, and in colors exactly like the undec ones Bachmann makes. So I got one. I have decals for the road name on the flat car portion, but nobody makes them for the tank part. So, I got a blank sheet of decal film, typed my own using a pretty good match for the typefaces for both road numbers (I assume I'll want another one at some point) and printed them onto a copier. I then hit them with two coats of gloss coat, and will be decalling the car either tonight or tomorrow.
I also painted the sides to the last civilian automobile (a 1/43 scale 1938 1 1/2 ton Ford Delivery truck) and made decals for a business name for the sides of it. I'll be weathering it along with the tank car this week.