If you're one of those nerds like me who like to use reusable bags at stores yet always seem to forget yours, here's a great little solution. It's called Envirosax. This one is a waterproof, lightweight polyester in a very cute print that rolls up into a tiny little thing that takes up no room in your purse. And when you get to the checkout at Target with three items and think, "Oh crap! I forgot my bag in the trunk," you'll let out a sigh of relief when you remember you've got a bag right there -- and a cute one, to boot!
Best of all, it's just under $10!