It is enough if the paper size can be about B5 paper size. Roll it into a tube with a diameter of 1~2 cm, and the toothpick can pass through the middle vertically to prevent the paper tube from scattering. Then, the lower end of the paper tube should stand upright on the desktop, and the upper end should be flattened and attached to the edge of the beer bottle. It's simple. 10 second can be done.

After reading everything that several people upstairs said, it is not feasible, it is not established at all in mechanics, and it needs a lot of friction to be stable. The bottle body is smooth, but actually it can't reach that big friction force at all, and it can't be done without the help of the edge of the bottle mouth.