We’ve had miniature versions of R2-D2 and Cars’ Lightning McQueen, but Sphero’s latest invention sees it returning to its, well, spherical roots. No larger than a ping pong ball, the Sphero Mini’s teeny tiny form belies the tech hiding inside. Once you’ve paired your Mini (£49.99) with the Sphero app, you can use either the on-screen joystick or tilt controls to whizz the toy anywhere within a 10m range, as well as play a handful of pre-loaded games. The headline feature here, though, is undoubtedly Face Drive, which tracks expressions such as smiles, winks, head tilts and more to determine which direction the diminutive robot takes. We can’t wait to see what it makes of our very best grimace.