Freight Train by Donald Crews has long been a favorite in my classroom. One of my coworkers made a paper version of the set below many years ago. It is wonderful, but it's a little too large to work well on our flannel board. We have it out for the children to use on their own, and they love it. But I still wanted a felt version for the teacher to use, too.
So, I took those pieces and shrunk them down to use as my pattern. When the train moves in daylight, we put up the sun; in darkness, we put up the moon. There's the tunnel, and a city. I skipped the trestle, because it would take 150 hours to make it... I used a little fabric paint to put some of the details on the train cars, but tried to keep these pretty simple. The city is the most detailed piece, and I love it :)
Buy this set at my Etsy shop: https://www.etsy.com/shop/FlannelBoardFun