Abstract: A sheet of paper has several sections defined by creases thereon. They include three rectangular sections arranged side-by-side, two triangular sections, and four blocking sections. When the sheet of paper is folded along the creases, it is formed into the shape of a hollow triangular prism. Thus, the folded paper presents a package in which matches or any other things can be suitably contained. A stopper is also provided so that it can hold the triangular prism shape.