Char from Crap I’ve Made shares a free pattern and tutorial for making a Reversible Sling Bag. This is such a cute bag! And it looks easy to make, too. The entire bag, including the strap, is made from just 4 pieces of fabric (2 pieces each for the inner and outer layer) and there is no complicated closure. Choose a couple of fun fabric prints, and sew one up for youself. Get the pattern and tutorial.
[photo from Crap I've Made]