Even though these are crocheted, I really like 'em.
Get your free patter here.
There are some cool patterns for the knitter, but the ones I spied t'weren't free.
This is over at Sugar and Creme's website. You do need to be a member to see the pattern. Sign up's a snap.
This is a knitted variety from Knitty. Free pattern.
I'm fairly positive this means I get to pick up another cool Starbucks mug. :)