There aren't too many things I simply won't put in my mouth...but room temperature coffee is on that short list. So, I'm a big fan of reusable coffee sleeves that keep your hands safe and your drink warm.
And I'm a particular fan of handmade reusuable sleeves - knitted ones, felt ones, and corduroy ones with photos inside! The only thing better would be a way to stick it to light poles and fire hydrants and the side of my Vespa.
After I made this I realized that it made a lot of sense to just work with a form that we are already really comfortable with: the Coffee Cozy. Why not just embed magnets into one of those?"