well, lots of those parts can be re-purposed,

those speakers in there are pretty decent.

DVD drive or CD-RW drive is worth something,

RAM

Airport Card? Airport Card Riser?

those are worth something.

You can make a super killer looking LED back-lit fish tank with it.

Main board is probably good. - sell?

You could always gut it, glue a 15" LCD screen where the old one was, and install a kick but hackintosh on the inside