As we continue to explore line as an element of art, my younger students drew lines in chalk on the patio outside my classroom. They used yarn on a flannel board to create pictures.
They also drew lines into finger paint. But instead of working on paper, I put the finger paint on a piece of plexiglass and children drew lines with their fingers on that. Those with sensory issues (which is most of my multiple complex needs students) drew with a Q-tip. Then we gently placed a piece of paper on top and pulled it back up. The paint was squishy enough that rubbing the back of the paper just made everything into a big blob. I could give the students a chance to work longer and more intentionally on the plastic before committing, and it was a chance to discuss monotypes and ghost images in printmaking.