Powder holders are containers used to store and dispense powdery substances. Two common types of powder holders are kegs (4 letters) and puffs (5 letters). Kegs are cylindrical barrels made of metal, wood, or plastic, and are commonly used to store beer, wine, and other liquids. Puffs are small, airtight containers that are often used to store spices, baking powder, and other dry ingredients.