This morning Levi J and I made homemade gak! It totally reminded me of Nickelodeon and the 1990s. I was so happy with the result! It was super easy, cheap, easy to clean up, and he had a blast! We've tried homemade play-do and he never has been very interested in playing with it. But the slimy gak was a hit.
Here's the recipe if you're interested: