Wearable bananas don't grow on trees. The banana skin is initially peeled back, then an LED display and oddly, a smaller banana is crammed inside. There's also a GPS in there, although it's wired all to a separate device that the wearer will have to carry -- which defeats the purpose of the wearable, not that we were taking a fitness wearable banana too seriously. Two runners will strap on the smartfruit, which apparently attaches to the wrist, as they run this weekend's Tokyo Marathon. Maybe next year Dole will 3D-print something out of all that carved-out banana.

And if you're not a banana lover, there's also tomato wearable, automating delivery of tomatoes to your mouth to promote tomato-based foodstuffs maker Kagome. It's still a fruit though.