alphabet wall

With help from Vater (and JeffHaas' code tweaks) on these forums, was able to work out and build a working animated wall! Can program to say anything, a long with many different lighting effects! Link to the original thread and the creator...

I need some help with a Prop/Scene Idea- mini spoiler alert if you have not seen Stranger Things and are planning too (which you should!). I'll try to write this to not give away TOO much. This one should be pretty simple, but trying to avoid buying an expensive prop controller, if possible...