I like to travel light, but know with baby on the way I'll be toting a lot more around, including a diaper bag. To keep my personal items (the things I would usually carry in my purse) organized and easy to find, I made a zippered pouch to go inside the diaper bag. It keeps everything in one place and can be easily removed if I need to hand over the diaper bag to Zach.
I followed Skip to my Lou's Pleated Pouch Tutorial, enlarging the pattern to 150% since I needed my bag to be a bit larger (Finished size is approx 11" x 8.5"). I used leftover upholstery fabric from the nursery for the bag exterior and a cotton print for the lining.