Unlike other projects, this one actually breaks apart the screen and controller so you can stuff it inside a smaller case. The upper half is the screen and Raspberry Pi while the lower half is the controller. You'll need a Raspberry Pi and some intermediate-level soldering skills to get this project done, but it's not terrible difficult.
You'll also need to 3D print the case, but thankfully there's all sorts of places that will do that for you. You'll find all the parts you need and a basic guide over on Thingiverse.