Meet the Avakai: a connected toy for kids that can sense proximity, touch, and movement to react with sounds, colored light, and haptic feedback. When you have a pair of these, you will be able to send tonal messages to others, share feelings, and more. With proximity sensing, the closer the toys are to each other, the stronger the feedback they emit. This app-enabled toy relies on Bluetooth to connect to your smartphone. You can find out more about it on Kickstarter.