Decor Hanging Swirl 18th Birthday (Pink) put on a special day for the mummy-to-be with this fantastic banner. Hanging Swirl a small strip of removable hanging tape to the middle part of the spiral and stick it to the ceiling in your chosen spot. The spiral should dangle down from the ceiling in a bouncy swirl. Make more hanging swirl decorations in the same manner. Birthday decoration materials like birthday balloons, photo booth props, birthday banners, and blingy lights are some of the must-have birthday decoration items for the celebration.