Our faces are arguably one of our most important features, and as such, doesn't it make sense for them to have their own personal lighting? Why should faces be subjected to the same detached lighting as elbows, and backs, and ankles? That's where this wearable ring of LED lights comes in. Invented by MIT PhD student Nan Zhao, the ring, called Halo, "aims to illuminate and present its user. Halo changes the wearer's appearance with the ease of a button click, similar to adding a filter to a photograph." It also looks pretty great to for telling ghost stories.