To reuse a used drop curtain or banner without disposing it by cutting it into an appropriate size and making a bag therefrom.

A drop curtain or banner 1 includes a display part 2 of characters, patterns, and the like displayed in a large size so as to be viewed from a distance. On a part other than the display part 2, an advertisement display 3 such as a logo mark of an enterprise and an advertisement wording is displayed in a small size and colored with an inconspicuous color fainter than that of the display part 2 so as not to be seen from the distance. After using the drop curtain and the banner 1, the used drop curtain or banner 1 is reused as a bag 4, the bag being formed by forming a cut line 5 on the used drop curtain or banner 1 based on a paper pattern, cutting it along the cut line into cut pieces 6, washing the cut pieces 6 and then joining the cut pieces together.