Designing an automatic roll of banknotes to save money is a creative and practical concept, which can provide children with an interesting savings experience. The following are some characteristics that may be considered when designing such a money -deposit can:

Automatic recognition mechanism: Integrate a mechanism for automatic recognition rolls to identify banknotes with different surfaces through sensors or optical sensors.

Digital display: Design a digital display to display the total amount of savings so that children can clearly understand their savings progress.

Sound effect: Add interesting sound effects, such as cheerful music or laughter to increase interaction and entertainment.

Objective setting and reward system: Allow children to set savings targets and set up a reward system to stimulate their interest in savings.

Automatic currency process: Design a simulation process, so that children can simulate the real money saving process by investing coins.

Transparent window: Add a transparent window to the design of the money tank, so that children can see the currency inside and increase the visual effect of savings.

Easy to take out: Consider designing a mechanism that facilitates the savings so that children can easily withdraw money and start a new round of deposit money.

Digital security education: Use this process to convey some digital security knowledge to children, such as setting a password or protecting the security of deposits.

Duravity: Make sure that the design is durable and can withstand the use and play of children.

Educational content: Provide some simple and interesting educational content, such as the importance of savings, how to make financial management, etc. Can be presented through games or interactive ways.

The goal of designing such an automatic roll of banknotes to save money is to provide children with a fun learning experience, and cultivate children's savings habits through interaction and play.