This model is very simple and is made out of wood, but if you want you can make it by 3D printing. 

The model uses MDF and plywood, 2 very common types of wood found which are very cheap. 

The joints are held together by nails and finished off with a layer of varnish. 

The computer being used in the images is the Microsoft Surface Pro 6, a universal size for all surface devices (probably).