Yes… a WORKING cellphone in Minecraft. It can make video calls and (sorta) browse the web… from inside the game. It’s amazing.
From Verizon: "In the world of Minecraft, almost everything is made of blocks. We’ve created a web application, Boxel, that translates real web pages and streaming video into blocks so they can be built on a Minecraft server in real time. Our server plugin uses Boxel-client to handle the communication between Minecraft and the real world as translated by the web application."
Awesomely, they even detail how it all works and provide the code over on GitHub so you can do it yourself: http://verizoncraft.github.io/