My coffee was getting cold before I could drink it all. What's the solution? Mug cozy! Wool is a great insulator! This took me an embarrassingly long time to make, but I am really happy with the results. I used the zipper from a sweater to make the top edge. I not only like the way it looks, but it adds a "lip" on the top, so the mug can't slip through my hand, and it also keeps the top from getting stretched out.
A little bit of elastic, and a big button, ensures a snug fit. Not too exciting, but definitely useful!
So, What have you been working on?