The orange sign was taken from one of the amusement park rides in the courtyard, which was a four-person spinning rope swing. Don't worry, it's not structural.
Speaker mounts were attached between the corners and the braces:
We made a shelf for scavenged parts, or "cruft", using a left over shield from the East Side vs West Side water war:
The inner edges of both beds were lined with white LED strips, which actually make the room substantially brighter: