Here it is! My never worn, too small dress - reincarnated into an awesome little boys backpack.
I used an old receiving blanket as the inner liner rather than interfacing, and stitched the whole thing with bright orange thread for some added color. The pocket on the back was one of the lower dress pockets. The straps were made from the belt. I cut the side piece from the dress waistband so there are little loops all the way around the backpack. I'm thinking we can add some hooks and clips and other fun boy toys to customize even more.
Friends, this was SO easy!! I did the whole thing in just a couple hours. I used this pattern, but tweaked it a lot for my own liking.