Moleskine Reporter DIY pen holder

A pen holder for my Moleskine Reporter. Here seen with a BIC Velocity Gel.
The basic idea for this pen holder is not mine, I know that I have read it somewhere in the blogosphere a long while back. My "improvements" are a transparent sheet of thin, hard plastic and a thin elastic cord. It is actually a lamination sheet that I run through the lamination machine without anything in it, it makes a perfect thin, cuttable, and sturdy sheet of plastic.
The cord is run in spiral through three small holes in the sheet. Together they make a holder that is almost invisible. By adjusting the cord this holder can accomodate two pens one on each side of the sheet.