Ever thought you could do with a second display on your iPhone? InkCase for iPhone 7 is exactly that. You can use it to read books, display useful widgets or pretty photos, and lots more.

It’s just one of the awesome ideas in this week’s Crowdfund Roundup. We also have the world’s first wireless earbuds with Bluetooth 5.0, the ultimate survival tool, and more!

I saw the Oaxis InkCase at the Mobile World Congress last week, and it looks pretty neat. The v2 “case” is actually an e-ink panel that connects to the iPhone (or other device) via Bluetooth and can show anything on its e-ink screen. The new version is modular, so you can slip in into any case for any device, and even mount it, say, on the handlebars of a bike for a sunlight-friendly readout.