Earlier today Gizmodo featured these cool Avengers-themed nightlights. They look great, fully earning their “wall art” nickname. Better yet they run on batteries, so you can place them anywhere on the wall (instead of plugging into a power outlet, which is often the norm for a nightlight).
And that brings me to the design seen above. A nightlight based on the Ghostbusters sign seen in the films, in the exact same vein as those neat Avengers nightlights. This would be a very affordable way for GB fans to procure an illuminated sign.