As for what to do next, there is nothing I want more than the old split-flap departure board of Penn Station. It was exactly like this one https://www.youtube.com/watch?v=U8azGTsslNc
I've seen people making custom ones themselves, and its on my todo list of projects. https://youtu.be/K_UEkRFP7fs was where I got the idea from, but many videos exist