I bought a tea pot, then I needed a tea cozy. So, I made one, free-style.
Double crochet with two strands of yarn, some regular green stuff mixed with Sugar 'n Cream.
Now my tea stays warmer longer.
Can't go wrong with one of these. I got the pattern off of the yarn I bought. It's Lily Sugar 'n Cream yarn that is generally used to make dish clothes and other kitchen items. The shopping bag is stretchy and fits a good amount of groceries. It's such a better alternative than bringing home loads of grocery bags every trip to the store. It folds up rather small and can fit into a backpack or bike bag.
Remembering to take it with me is the only issue I ever come up with. I try and keep it in my car.