Someone on Maui has just discovered that a bunch of miscellaneous electronic bits paired with enough tasty tropical fruit can make a laser cannon. One that you can then eat. Will wonders never cease?*
In classic MIT fashion, researchers decided gently squeezing fruit to check its ripeness [insert crude sexual innuendo here] wasn't good enough, so they created a hand-held sensor that detects when fruit is ripening. Oh, and it's affordable too. Show-offs. At least it's more kind to the fruit than this gadget.
Fruit stickers don't serve much of a purpose once you've bought the fruit they're attached to. But a new concept would give them an actual purpose, turning them from waste into a waste-saver.