Already checked... lucky if I'd get £30.. can't be arsed. I just don't know what to do with it. I inherited it along with my new office.
Keep it for another 20+ years. It is like some art - it will be really valuable (to some crazy git like me probably) in 20 years from now.
I've got to agree, keep it. Though if its an absolute choice between chucking it or modding then it looks like enough space for an itx below the screen, be great if you could wire in the current monitor except for the image quality.
The screen is around the same size as an iPad (9" vs 9.7") so you could definitely manage that one. I can see the headlines on Engadget now.. Floppy is 3.5", not the bigger size.
Let start a 'Tendency' by using these old MacPlus instead the Ipad. Apple pwned buy them own products.