To infinity and beyond
I love this knitting because it not only twists the scarf but also my mind. It's so geeky matimatical. You knit it with a circular needle and it turns out as a möbius strip. Here's how to do it. It's one sided and has the mathematical property of being non-orientable.
The yarn I used in this strip was a mix of merino and alpaca. Took about 100 g.