I first taught myself how to sew by making bags - I have more handmade bags in my closet than handmade anything else. I love making bags because there's no sizing to really worry about - if it turns out an inch smaller than I had intended, generally it's no big deal.
I made this one last year, inspired by a ModCloth bag I now cannot find a photo of. It's made of a cotton canvas from Denyse Schmidt's County Fair line, with a coordinating vinyl back. It's definitely one of my favorite and most often used bags.