Smoke Grenade. Remember kids: Try this at home!. SMOKE GRENADED Materials: Potassium Nitrate (finely ground) Sugar Baking soda Cannon fuse (2 secondman) matchbo Smoke Grenade Remember kids: Try this at home! SMOKE GRENADED Materials: Potassium Nitrate (finely ground) Sugar Baking soda Cannon fuse (2 secondman) matchbo