As I said yesterday, drawing, coloring and art projects can be very effective reinforcing activities for preschool speech sessions. Give me a pack of markers and some white paper and many kids get excited.
What I like is that the drawing can relate to the sound they are working on or not. In this case, my friend was working on overall precision and his /th/sound, never mind that he was inventing his own “robobots!” I love how creative he was although I did need an explanation for some of the features. He was happy and so was I as he worked hard and stayed engaged in his speech lesson.