sarahdotcom brought me origami paper from Tokyo. I learned how to make the cube from the origami instructions here.
Having gained this new skill I made one out of pink note-cube paper and gave it to my colleague, Stuart. We have a running joke about colouring things - usually objects on maps or bits of spreadsheet - pink. I am in favour of it, he is vocally not. However, the cunning cube-ness of the origami has, for the moment at least, trumped the pinkness of it and it has gained a place of honour on top of his monitor.