How to turn a Raspberry Pi into a portable Tor proxy (Onion Pi)

We all know that Prism is most likely just the tip of the snooping iceberg. While some of us may run Tor on our PC or Mac, there may be times when when we are working on a device that is not our own, or perhaps even a Chromebook, tablet or phone.

Enter the stalwart Raspberry Pi, which can be transformed into a portable Tor device for browsing on the go.