Sometimes the best way to keep from looking at a screen is by putting it away. That's the idea behind Envelope, a new concept from London-based design firm Special Projects. Created as part of the Google Digital Wellbeing Experiments platform, the Envelope works by sealing a phone inside. A companion app allows for either calling or photography, facilitated by "buttons" printed directly on the paper and mission-specific cutouts. By designing the Envelope to be destroyed when opened, it creates added incentive to stay screen-free for as long as possible. Those using a Google Pixel 3a can try out the experience right now, via a free app from Google Play and downloadable, printable PDF files.