Put a coin into the slot of the piggy bank and it utters a message! You can record whatever message you like, and let the bank talk when someone put a coin. Use something reusable around you, like a milk carton or a PET bottle, for the bod…

A solar lantern kit that generates the electricity with the solar battery during the day, charges it in the battery, then the full-color LED starts flashing when it becomes dark at night. Use anything reusable around you, such as a milk c…