Using this Harry Potter trunk - style gift box is a breeze. First, take it out of the flat - packed package. Unfold it gently until it forms a proper box shape. Place your gift or keepsake inside. Then, close the lid. The magnetic strip will hold it shut, and you can tie the ribbon for a more decorative look. When it comes to storage, you can flatten it again and keep it in a dry place. Avoid getting it wet as the card may lose its shape and strength. If it gets dirty, you can use a soft, dry cloth to gently wipe it clean.