Stump your friends and hide secret items in a Mysterious Gift Puzzle Box. With two different levels of difficulty, these boxes will keep everyone guessing. Slots allow you to put small, flat gifts (like a gift card or cash) inside without opening the box. Then, leave it to the recipient to figure it out. Challenging box has one sliding part. Impossible box has two liftable pieces with a knob, a sliding piece and a small removable piece. Each includes a solution guide.