Mike - there was an Austrailian or New Zealander on the Yahoo Standard Gauge group who hung trains from the ceiling. That was in the 1990s.
Here's something a bit different --- a Lionel 12 gondola with the number and data stamp on the left:
The interesting car should have brakewheels but they are missing. The car is the same as the one above it, but for the position of the lettering. The number and the data are different stamps. These cars have no Lionel MFG embossing or identifying stamps.
I have another brown Lionel 12 with the MFG embossing in the frame. It's shown below on the lower left:
The MFG embossed gondola has a different number stamp, but the data stamps are the same.
Here's the three brown gondolas:
All the cars have tab couplers. I think these brown cars date from between 1915 to 1918.