Today is bittersweet because it’s the day beloved actor Robin Williams would’ve turned 65. Next month will mark the two-year anniversary of his death, but his daughter Zelda is honoring her dad’s memory in the best way — she took to Instagram to share a special throwback pic of Robin with her and her two brothers, Zachary and Cody.

“Still not really sure what to do on days like today,” the Dead of Summer actress wrote. “I know I can’t give you a present anymore, but I guess that means I’ll just have to keep giving them in your name instead.”

She explains how her dad cared about three important causes: “rescue dogs, people suffering from disabilities, and our nation’s wounded veterans.” Zelda donated to a nonprofit organization that benefits all three: Freedom Service Dogs of America, which saves dogs and uses them to help people with special needs, including veterans and people currently in the military.

You can donate to Freedom Service Dogs of America here.