I had already created my project before hearing about this thread... not really elegant visually, but functional.
I needed a way to keep my cables that I attach to my laptop at work from falling off the desk corner and to keep them generally restrained from moving or slipping when i head off to a meeting.
the result is a device made of a business card with slots cut in the top and then affixed to the corner of my desk.
additionally, if i only want to temporarily restrain a cable it can just drape over the corner of the desk inside the edges of the business card.
very effective, and a fun project! glad it could find a home here!