Having received almost US$450,000 in crowdfunding, castAway has expanded from a case with a second screen to a platform of accessories. Featuring a gamepad, a wallet a wireless charger and more, the castAway accessories can give almost any smartphone an upgrade.
https://www.notebookcheck.net/castAway-expands-vision-to-give-every-smartphone-a-second-display-a-gamepad-physical-keyboard-boombox-speaker-and-portable-wireless-charger.463293.0.html