Hmmm, ya I guess it hasn't had any fuel put in it for a while! I put some in before it went to the movie set, but that was in a park so I am guessing it spent a lot of time under the trees.
Since you didn't get a pic, here's one for you. My '87 Celica GT airbox. The white thing at the top is the air filter, and the mess below it is what was stuck to the bottom of it! I am guessing the previous owner drove around in the fall a lot? Needless to say it runs better once I cleaned it out ha ha.