I have used the messenger bag pattern for a diaper bag. There are several free online. I make it about 15" wide and 12" high. I make the outside side pockets a little wider than the side of the bag, then add elastic to the top. Good for carrying bottles. Put the large outside pocket on both the front and back. Same pockets on the inside as the outside. It was well used and I have had requests for more of the same. Google "School time messenger bag". I made it larger and made the strap adjustable.
Last edited by krafty14; 06-12-2014 at 02:39 PM.