London Ent / Splash News 1 / 5
London Ent / Splash News 1 / 5

Nicole Richie and Joel Madden clearly have a soft spot for kids, recently opening up a playground in Los Angeles.

PHOTOS: Nicole and Joel Open Playground

The proud parents of daughter Harlow and son Sparrow, the couple have continued to spread their love through their Richie-Madden Children's Foundation.

Nicole Richie: Eating Disorder Rumors "Extremely Insulting And Irresponsible"

On Tuesday, Madden and Richie attended the ribbon cutting ceremony for the playground at Beyond Shelter, a non-profit group providing shelter for homeless families in Los Angeles.

PHOTOS: Nicole Richie & Joel Madden At The Lakers Games

The couple had some help from a surprise source: 7-Eleven! The convenience store chain's 7-Eleven Cup With A Cause donated $250,000 to their foundation.

Want to do your part? Go to a 7-Eleven, buy a special Cup With A Cause cup and fill it with a beverage. The proceeds will then go to charity.