Gadgets & Gizmos: Albert Einstein's business card, concrete coffee makers & the world's smallest violin

Steve Caplin is excited by Jony Ive's new venture, even though nobody yet knows what it is. He wonders how much Albert Einstein's business card will fetch. There's a face sticker that can monitor employees' tiredness, but there's a catch. Living tattoos have been developed for buildings. The UK's first flying taxi has had a real world flight over the Cotswolds. Who might want to buy a concrete coffeemaker? Loughborough University has created the world's smallest violin. Knee pain might be reduced with in-ear treatment. And you will soon be able to buy your own spaceplane – for a mere $30m. Learn more about your ad choices. Visit podcastchoices.com/adchoices