Rock'n'Roll is a takeaway transformer. The concept design takes a thin sheet of steel and rolls it into a cylinder. The trick is that, rolled one way it becomes a bracelet, and rolled the other way, along the long axis, it turns into a chopstick. You will, clearly, need two.
Would this work? We're guessing that the natural state of the sheet is the chopstick form, and that you'd have to unfurl this with some force to make the wrist-strap, which would itself be held in shape by your arm. We like the playful use of materials, but come on -- you can walk into pretty much any sushi bar and get some disposable chopsticks from there, although we admit that a regular wooden stick can't double as a drinking straw.
Product page [Tuvie via Core 77]
