I am working on my new layout and have most of the track finally put down. I'm curious if people have a recommended list of operating accessories, or ones they particularly enjoy. As a note, I'm using Gargraves track with Ross switches (and being frustrated that the shoes catch and cause derailments). As such, I'm seriously considering a new line without switches just for the operating cars. Also, I have a 2.5 year old son who loves helping me work on the layout and running his own trains, so any accessory would appeal to him.