A frighteningly thourough collection (currently at 724!) of modern condiment packages from restaurants.
EDIT (05/2010): The bigger, 929-entry museum is no more. I’m currently linking to another one I found. Yes, you read that right. There is apparently more than one online condiment packet museum in existence, or at least there was. The one I’m linking to now was apparently founded in 2005, so hopefully that means it will stick around. Also, this one offers buttons. Yay!
Hey, it could have value. This guy and a hot chick found out that the average ketchup packet contains 2.5 cents of ketchup. And that’s in 2001 dollars!