This Giza Pyramid Corners Kit takes approximately 5 days of continual printing on my 3D printer to make.  It is made from 100% all-natural plant-based plastic and is precisely printed layer by layer to the same dimensions as the Great Pyramid.  You simply buy the 2x2s and cut them to whatever size pyramid you want from the easy-to-follow instructions that come with it.  You can buy the full five piece kit (as shown below), or you can simply buy just the apex piece.