GoTenna is a great Smart-Mesh device for direct peer-to-peer communication without the need of any centralized service providers. You can use it with your friends while spending time outdoors or even if you just travel and want to stay in touch with other friends.
I really like the idea of decentralized and independent communication network it ensures more personal freedom and independence than regular mobile providers.
The GoTenna comes in a package of 2 for 179$.
Great Hunt thanks for sharing!