The pattern Mr. Bilney created, shown at right, can be folded into a gift-box shape: a cube. A cube is a "platonic solid", one of the few 3D shapes that can be made from a group of simple regular 2D geometric shapes like squares, hexagons, and equilateral triangles.
I'm sure you can see the kangaroo shapes in Mr. Bilney's pattern. Can you also see the shape of the Australian continent? It's shown in green.
You can see much more of Bruce Bilney's tessellation art at his website, Ozzigami.com.au