I am have added Neon Signs.  I found some bug with other entities and I am trying to add the mixing table.  If you can deal with some bugs and want to help test let me know.  I hope to have this all working by the end of the weekend.

Also I set the signs as always on as they are not terribly visible off during the day (especially the animated signs).

I was not able to get autoturrets or Tesla Coils to behave so they are commented out for now.  The rest are all done.