While cleaning out my archives last week, I ran across the backpack I received when I attended the Microsoft Dynamics Convergence show in Dallas last March.  Inside, I found this:

Betcha can't guess what it is.

Well, it would appear I had placed some lunch left-overs into my backpack with the intent of finishing them off later in the day.  The reddish thing on top is an apple, while the brownish lump in plastic, is a half-eaten brownie.

Both of which are totally fossilized and fused together.