I came across an image of the texture of the Transformers' Allspark and wanted to use it to create a papercraft version. However, the image required some tweaking because it wasn't square enough to build a perfect cube.
The original texture is by Cody2003 at the TFW2005 forum here --> [link]
My modified version is shown above. The image can be printed out on letter size paper to produce a cube roughly 2.75" (7 cm) tall. The green lines indicate the location of the one fold line whose location is not immediately obvious. Gluing flaps will need to improvised if you build it. A build photo of the finished cube can be seen here--> [link]