Wireless hotspots are nothing new. But wireless hotspots that you pay for only when you use them? That's novel, and that's exactly what you'll find in the Karma Go. Completely contract-free, this small, sleek looking device gives you a speedy 4G LTE connection that you can share with up to 8 devices over 802.11n Wi-Fi, and sports a built-in battery good for 5 hours of Internet usage and 220 hours of standby time. But the best part is the monthly plan: there isn't one. You pay $14 for every GB of data you go through, and since your data never expires, you never pay for anything you don't actually use.