You’re walking down the sidewalk and see a group of people begin to pose for a photo as one of the group members steps away to act as photographer. Offer to take their picture.
You’re playing on the beach with your child and see a new parent trying to snap a photo of his or her baby in the sand. Offer to take their picture.
You’re sitting at a restaurant and see a party taking turns photographing the group. Offer to take their picture.
You’re at the park and see a young family taking a photo with one of the members behind the camera. Offer to take their picture.
You see a couple photographing scenery or one another. Offer to take their picture.
You’re at a tourist destination and you see a person craning to take a selfie. Offer to take his or her picture.
While you’re at it, take 5 quick photos from that vantage point. Snap a few horizontal and a couple vertical. You sacrifice perhaps two minutes of your time but you’ve provided a lasting memory and a kindness to someone else. And if you get turned down, no harm. You did the right thing.