Party decorations are a great way to add a festive atmosphere to any event. The most common decorations include balloons, streamers, crepe paper, helium balloons, and Japanese lanterns. Balloons are colorful, inflatable decorations that come in a variety of shapes and sizes. Streamers are long strips of paper or plastic that are hung from the ceiling or walls. Crepe paper is a thin, crinkled paper that is often used to make decorations such as flowers or bows. Helium balloons are filled with helium gas, which makes them float in the air. Japanese lanterns are paper lanterns that are often used to decorate gardens and outdoor spaces. All of these decorations can be used to create a fun and festive atmosphere for any party.