Broadway in the Shire first needed a convincing Hobbit Hole. While it was hard to find realistic-looking grass, we had a pretty good round door.
And while Frodo sang Broadway hits (more on that later) the room was decorated with Lord of the Rings-themed musical show posters.
For those of you who are curious about the process, here is the spreadsheet that had all the ideas for musicals and songs, including some that we never ended up recording. You can also see a long list of Lord of the Rings terms that I tried to find puns for, but failed.