Elements 4D Interactive Blocks are the latest creation from augmented reality (AR) app developer Daqri. The faces of each individual block display a carving of a different element from the periodic table, which you can directly interact with using Daqri's AR app.
At first glance, the blocks don't look like much, but under the lens of the app (which is free and available on iOS and Android), the elements come to life inside the blocks. The elements can also interact with each other, even going so far as to show what the chemical reaction between two elements might look like. All without risking your eyebrows in the process. Whew.