Here's a sign for the fictitious Aperture Laboratories from the classic Portal and Portal 2 video games. I hung one up at work, and pretty quickly found out who my fellow video game nerds were.
I've included 3 different plates to choose from:
The border around the sign is a separate object, so if you like it better without it's easy to delete (See 2nd picture).
And remember:
The cake is a lie…