Prompt: - Include images of people using or wearing backpacks to create associations with the convenience and style of the product. - Adding a backpack brand logo or a well-known fashion brand to increase the recognition and attractiveness of the certificate. - Create a certificate in the form of \"coupons\" or tickets to give it elements of a game or entertainment. - Using bright and attractive colors to make the certificate visible and eye-catching. - The inclusion of an attractive illustration or graphic element related to adventure or travel to emphasize the functionality of the backpack and its possible use.