Talks for your inner child

Why can't two slices of pizza be used as a slide clicker? Why shouldn't you make music with ketchup? In this charming talk, inventor Jay Silver talks about the urge to play with the world around you. He shares some of his messiest inventions, and demos MaKey MaKey, a kit for hacking everyday objects.

At this school in Tokyo, five-year-olds cause traffic jams and windows are for Santa to climb into. Meet: the world's cutest kindergarten, designed by architect Takaharu Tezuka. In this charming talk, he walks us through a design process that really lets kids be kids.

Using examples from birdsong, the natural lilt of emphatic language and even a cooking pan lid, singer-songwriter and TED Fellow Meklit Hadero shows how the everyday soundscape, even silence, makes music. "The world is alive with musical expression," she says. "We are already immersed."

At the INK Conference, Arvind Gupta shares simple yet stunning plans for turning trash into seriously entertaining, well-designed toys that kids can build themselves — while learning basic principles of science and design.

Charlie Todd causes bizarre, hilarious, and unexpected public scenes: Seventy synchronized dancers in storefront windows, "ghostbusters" running through the New York Public Library, and the annual no-pants subway ride. His group, Improv Everywhere, uses these scenes to bring people together.

In this fun, short talk from TEDYouth, lexicographer Erin McKean encourages — nay, cheerleads — her audience to create new words when the existing ones won’t quite do. She lists out 6 ways to make new words in English, from compounding to “verbing,” in order to make language better at expressing what we mean, and to create more ways for us to understand one another.

Remember the days you struggled just to make a yo-yo spin, and if you were really fancy, to “walk the dog”? You ain’t seen nothin’ yet. Japanese yo-yo world champion BLACK tells the inspiring story of finding his life's passion, and gives an awesome performance that will make you want to pull your yo-yo back out of the closet.

Using animation, projections and her own moving shadow, Miwa Matreyek performs a gorgeous, meditative piece about inner and outer discovery. Take a quiet 10 minutes and dive in. With music from Anna Oxygen, Mirah, Caroline Lufkin and Mileece.

A pioneer in research on play, Dr. Stuart Brown says humor, games, roughhousing, flirtation and fantasy are more than just fun. Plenty of play in childhood makes for happy, smart adults — and keeping it up can make us smarter at any age.