We made bathtub crayons recently. We kept a set and gave a set to a friend for his birthday.
We grated a bar of white soap. Placed it into 4 or 5 cups. Added a few drops of food coloring to each and stired until well coated.
Then we put them in an ice cube tray and froze them. (We coated the tray in oil first for easier extraction)
So fun!
