This is good advice, you could get close to the cost of building a cheap system with whats left.
Ebay is my go to for this kind of thing, sell as is no return. I generally test items first and sell as is tested, helps get a few extra dollars, I can accept with an mxm card this is hard (ive no way of testing it personally and i tend to have a lot of crap laying around for testing).
But display, keyboard, chassis parts, if its a reasonably recent laptop they're worth reselling