Well i wanted to do something similar with my Bug this weekend, except he is to little for shaving cream. My main thing was I didn't want him to put it in his mouth. I know I'm not the smartest woman in the world BUT I'm pretty sure he is not suppose to be ingesting shaving cream. So i got to thinking what could he eat that had a fun gooey consistency that he could play with...PUDDING!
SO...I bought some cheapo Walmart brand vanilla instant pudding for cents, used some Lactose free milk, and divided our pudding into four dishes. I added food coloring into each dish so we had four colors to play with.