In a family photo frame, we would probably see our dear family members. In a photo frame after a trip up the mountains, we might see the beautiful scenery and the people who we were with. If it was a picture from a museum, we might see all the items that are displayed for the visitors to see.
However, in the picture frame of a celebration, what would we see? Maybe the person whose birthday it is, or a beautiful cake, or lots of happy people.