CHICAGO (WGN) - On Chicago's Northwest Side, the boundless energy of a 4-year-old boy named Louis Gottschalk has caught the hearts of many.

On Saturday, he showed off his collection of cars and owls.

There was also something brewing in the kitchen, where Louis and his mother fixed up another batch of cold lemonade, which is how WGN-TV first met Louis and his family.

"It's cold and it's yummy and it has ice in it," Louis said of the lemonade.

Just last month, Louis, his mother and father set up a lemonade stand just outside their home for a good cause.

"I'm selling for money for kids cancer," Louis said. "Sometimes they're not feeling so good, so we're selling lemonade today."

Louis himself is a cancer warrior and wanted to help out the nonprofit Alex's Lemonade Stand Foundation for c

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