Happy 4th All,
Hope that someone remembers this and I'm not crazy. A few months ago someone posted a video of an "unvention" for a mobius like scarf. It was knit as a circular cowl with a row of button holes on one long edge and buttons on the other. Depending on the way that the buttons/holes were aligned, it caused more or less twist on the cowl, eventually turning it into a mobius or a double mobius.