Here is how you can make one for yourself, or a knitting/crocheting friend:
To begin, remove the can label and run it through the dishwasher to clean.
To knit the cozy I used a 12" circular needle size 7, and some scrap yarn in a sport weight.
Cast on 75 stitches.
Knit 1, purl 1 rib for 1"
Knit the next 1"
Repeat these two sections once more, or to fit height of can.