Lionel Power Supply Switchbox

We bought a Lionel train set to run under the Christmas tree. We wanted our grand kids to be able to play with it for a few years. It works great except for when you need to turn the power off to put the trains back on the track. The set came with a piece of track that has a female connector that the power supply pugs into. The plug fits tight and can be hard to pull out. So I printed an enclosure to house a switch that is EASY to turn the power off or on. Now the grand kids (and grandma)