As summer is coming finally, I am sure there are charity events you can attend and help with by just taking a picture as I did last summer in Hot & Adopt.
This event was for adopting animals, and in a very nice space you could play with cats and dogs puppets, while we were invited to a drink and these cute cat-lollipops- cake of the picture. We were given these funny kitty-ears and a T-shirt of the event, and we could see even celebrities who support these kind of events with their presence or their money. That is the reason why there were so many photographers around!
It was very nice to attend, and I encourage you to look for these kind of events!