I received some of these as a gift. At best, they are a solution in search of a problem. More realistically, they are an abuse of technology and simply future landfill. Absolutely NOTHING comes in the extensive packaging indicating what these silly things are supposed to do. Perusing the on-line documentation is an exercise in futility. The forums and whatnot (including this PopSci article) seem to discuss only the promise of the devices, but almost nothing about anything useful or interesting to do with them.
Either PopSci was paid an avertising fee to include the cubes in a BestOf category or their review process is severely flawed.