Your hero's main gallery is the equivalent of a photo gallery on social networks. It's just that we don't photograph, we draw and paint. What can he post? Was he in a cool place? Maybe it is an excuse to paint or take a picture of a landscape from a drawer or from behind a wardrobe? Has he met with friends? Draw it. He bought a vase and put flowers in - there is already the subject of the painting. Was he caught looking stupid? Did he see a nice or funny scene? Sketch. Do you paint abstractions? Well, maybe pretend it's a fabric for a dress, or a dream, or ...