Here's a hack I came up with for an emergency diaper I had stashed in my messenger bag that goes everywhere: vacuum sealer + backup diaper. Packs down tiny, keeps it from wearing out while floating around the bottom of a bag, etc. Works with wipes too!
If this isn't a quintisessential parent hack I don't know what is. This brought back memories of those old Seal-A-Meal TV commercials from when I was a kid! The technology behind vacuum sealers is still much the same, with FoodSaver and Seal-A-Meal at the head of the pack.
A Ziploc bag would work, too, but would take up so much more space in a packed bag! You're a smart guy, Aaron. Thanks for sharing.