Here is a hackable display that allows businesses to share their internet metrics with the world. The MIOT is inspired by old departure boards. It supports top social networks such as Twitter, Facebook, and Instagram. Since this is an open source solution, you are going to have an easier time customizing it.
MIOT shows when you have received a new e-mail. It can also show time, weather, and temperature. The product is getting funded on Kickstarter.