This Valentine's Day, express your love with the Make 1 Valentine's Mailbox Kit from Greenbrier. This traditional-style, multicolor cardboard mailbox kit includes everything you need to create a beautiful and unique Valentine's Day decoration, without the need for glue. Perfect for any room in the house, this kit features a rainbow-themed design and is ideal for adults looking for a fun and festive way to celebrate the season. Whether you're looking for a gift for a loved one or just want to decorate your home, this Valentine's Mailbox kit is sure to bring a smile to everyone's face. ShipN24Hours. Inventory Location 7722