Light interior with neon

I am trying to do some sci-fi interior lighting.

I have a directional light with shadows turned off, this is set low. It is pretty dark still (which is what I want)

I would like to light the level with emissive and neon. Emissive materials dont really light much besides themselves in my experience. Any tips or tricks anyone can share to get something cool going, or to better simulate the lighting coming from a neon sign?

THANKS