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Generous (Vivienne)

Confident (Kelvin)

Proud

Creative

Caring (Vivienne)

Understanding

Hard Working

Resourceful (Kelvin)

Inventive

Dedicated (Vivienne)

Determined (Kelvin)

Persistant

Intelligent (Kelvin)

Helpful (Vivienne)

There are many things Kelvin can't afford. He spends nights figuring out how to build those things.

He built a rechargeable battery that provides power for homes in his area.

"But I knew that other kids were having a harder time than I was at that very moment."

He made both using items he found in the trash.

A small percentage of sales goes to support Vivienne's dream of making the world a better place for all children.

When Kelvin first began tinkering with trash, some people laughed at him. They said he was wasting his time.

"I want all kids to be able to play," Vivienne, now 10, told TFK. "I want them to be happy."

She promised to work every day for a year, rain or shine.

He also showed off his handiwork to students and professors at MIT and Harvard University, both located in Cambridge, Massachusetts.

Last year, Kelvin presented his inventions at the World Maker Faire, in New York City.

"Sometimes, it was hard for me, when the weather was bad or I wasn't feeling well," Vivienne says.

'I never let problems get me down."

To help raise money for children like the two boys in the photo, Vivienne started a lemonade stand near her home in Marin County, California.

Now, at 16, Kelvin runs a radio station in Freetown.