Money Maze Puzzle Box: Give the reward in a challenging way instead of just putting cash in an envelope; let people earn the reward with their effort, teach them the words "no pain, no gain", and also develop their logic and imagination. Set of 4 Maze Puzzle Boxes: Comes with 4 pcs of random color maze puzzle boxes in 4 different colors, red, green, blue, orange; the inner storage volume is about 5 x 5 x 5 cm, and the lock hole is about 4.7 cm in diameter; remember that the items you want to put inside must fit through the hole. How to Get the Maze Reward: Move the ball to the designated position, press the slider, and the lid will open; remove the reward and close the lid; easy to get the maze reward with patience, and these puzzle boxes can be used many times. Difficulty: Not too hard and not too easy; just need to control the ball carefully; improves children's attention; also works as a great party favor; hold a race to see who's the first to open the box; both the process of the ball moving and receiving the reward can be very fun. Applications: These money maze puzzle boxes are also a coin box and the lid has a slot; they can serve as a party favor; these maze puzzle boxes can also be sent to friends as a gift for birthdays, Children's Day, and Christmas; train people's patience; these functional boxes cater to most people's interests.