'Oprah's Big Give' contestant Brandi with transit passes.

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Brandi wants to give big to CHARLEE, a nonprofit organization for 18- to 23-year-olds who have outgrown foster care but still need a helping hand.

One major way CHARLEE supports its members is by providing them with public transportation passes, so Brandi heads directly to the transit station, where she purchases $10,000 worth of bus and train passes.