So it's immediately obvious that this is a useful tool for creating an unconventional sock architecture, right?
I'd had a creative inspiration for sock architecture several months ago, but I never figured out quite how to work the heel. Last night while I was trying to fall asleep, I suddenly had an idea about how to go about solving the problem: mark up an actual sock! The house was dark and my husband was asleep already, but luckily there was a load of whites wrinkling in the dryer, so I fished out one of his white socks. Sadly, there wasn't one with an incipient hole, and I grudgingly admitted to myself that I ought not to draw all over a perfectly good one with a laundry marker. So I used double pointed needles to mark parallel lines to help me figure out where to place heel shaping elements. Then I stayed up way too late knitting on my prototype.
I'm taking (hopefully-- still waiting for confirmation) a class with Cat Bordhi in seventeen days, and I'd love to have this prototype completed to take with me to show off. I can't post a photo of the WIP because that might interfere with submitting the design for publication, but I'll share a closeup of the yarn knitted up because it's Ooh Pretty. It's a Claudia Hand Painted Oops, which is a shame because I'd be tempted to buy more of it.