How many round cases do you have? I bought a bunch of these things from the dollar store. They can hold anywhere from from 25-30 trains depending how neatly you want them to be in there. I find them pretty handy for the time being. I have to hide the main collection from the kids while the other couple hundred extras stay out to play with.
On topic, I find this display idea awesome and would love to see it in action. Whenever that happens, I hope picture get posted.
On topic, I find this display idea awesome and would love to see it in action. Whenever that happens, I hope picture get posted.