The use of collage here is really nice. Taking a small object like an orange and putting it in the place of something huge, like the sun, makes this world seem small. There is a nice sense of foreground, middle ground, and background that draws the viewer through the image.
Fun with self portraits and photography. Have older kids snap pictures of the younger ones and then snap each other in artistic ways. Or have them do a photo shoot one week of someone that is important to them (mom or dad); using art as a way to honor others. Brainstorm what that may look like