What I love sharing most on Google Maps is photographs. Photographs tells the story of a place visually. When people search for a place the first thing they note is the picture of the place. So I love sharing pictures in Google maps.
Generally i contribute in two ways. If it is an place of attraction i try to click a picture which gives a different visual angle.
Also I upload the essential details of the place such as opening and closing times, rules and regulations and about the place.
If it is a restaurant I try to click the pictures of foods in a pleasing manner and upload them with relevant details.
The two pictures for example i uploaded in google maps. The response for these pictures were amazing. I got a significant number of views for my pictures. I am happy that I am able to help people through my pictures.