Remember the days when kids used to play with building blocks, instead of iPads? With this toy, you can have the best of both worlds. Bilo is a building block set that lets kids build models digitally through real blocks in front of them. The blocks have micro controllers in them, which communicate their position to a Bluetooth-enabled base plate. That works to connect with a companion app on your smartphone or tablet, so you can see your model getting formed as you lay the plastic blocks down.