Oh....I've quite a few of those, I've been selling them on my craft stall.
So easy to knit, I've been calling them corkscrew scarves...had to google 'potato chip scarf' to work out what you meant! <blush>
But I love the name 'potato chip' - I am indeed finding them very addictive to knit. As soon as I bind one off, I grab a different colour yarn and start all over again haha!
However, I'm in Ireland so I dare say you can find someone closer to you who can supply you with one. But if your desperate/stuck let me know.