Want to discretely share some files when you're out in the world? Over on Node, they show off how to build a simple Wi-Fi access point where you can share files with anyone nearby, then hide that inside a pocketbook so nobody knows you're doing it.
The access point itself will allow multiple devices to hook up to it so they can all share files with each other on a private little network. Then, for fun, the whole thing is shrunk down and stuffed inside a small notebook so you can stealthily share files anywhere. It's a little over the top, but fun nonetheless. Head over to Node for the full guide.