Spoiler alert: this will probably be your christmas present this year.
I am a crocheting monster. Once I finished that scarf, I tried out a few different patterns and made a couple of little things, including some wrist warmers and the above beer cozy.*
I was a little dubious as to the effectiveness of wool in keeping my beer cool, but a quick google search led me to this website, which actually tested just that: “Although you think of wool sweaters and socks as keeping you warm in winter, wool is a good insulator, period. It can keep things cool, as well, because it keeps air from moving, preventing heating through convection.” Thank you, interwebs.
*In the interest of full disclosure, the pictured beverage is in fact ginger ale, not beer.