The result is a bag that I love, that is big enough to fit the iPad plus a few other things that I may want to carry around with me including the wireless keyboard, but that won't win any awards for design or construction. For example, it didn't occur to me that I had no idea how to add straps until after the rest of the bag was done. Live and learn. Next time I'll use a pattern. But for now...
VOILA!
The yellow fabric is a durable canvas-type material and the inside is soft, cozy flannel. Everything, from the fabric to the button to the elastic loop for the button, was from my stash. It took less than an hour, and I will be using it regularly, I am sure. Well, at least until I make another one where I actually follow a pattern!