Among the dozens of cute and savvy things you can now do on your iPhone thanks to iOS 10, which launches Sept. 13, is an animated celebratory full screen feature waiting for you in iMessage ...

A mylar balloon has a metallic coating. You can find them in most stores with words such as ‘Happy Birthday’, ‘Get Well Soon’, or in this case ‘Happy Valentine’s Day’ written on it.

The balloon-borne platform was festooned with a “Happy Birthday, Stephen Hawking,” plus a couple of party balloons for the occasion. (The heavy lifting was done by a much bigger balloon that ...