Get a clump of hair from your pet and eat it.
Get your favorite donut. Cut in half. grill up a nice juicy cheese burger. Place between the donut and enjoy.
Who can eat a whole tablespoon of flour? I think it's harder than the cinnamon challenge.
You know that when you were a kid you ate play-doh before or at least tasted it. Why not re live your childhood and eat some play-doh