I have a copy presently on my wall.
Funny little story showing most people wouldn't know the DOI if someone smacked them upside the head with it.
My girlfriend's brother came home all excited from Williamsburg claiming to have purchased a copy of the DOI for his house. A cursory glance, and I informed him that what he had was actually a copy of the Constitution. I then pointed to the wall and said, "THAT, is the DOI". Sad, don't they teach kids this in school anymore?