The WiiBook is a project to take the motherboard of an old unibody Macbook Pro (made in 2009-2012), and transplant it into the shell of a Wii. Since these old laptops had CD drives inside of them, this constrained the motherboard to a very specific footprint, which almost exactly matches that of the Wii's motherboard, making this swap possible. All of the materials for the project can be found at this Github page.