Display an empty glass and 3 different color small silks. The magician pushes 2 silks (say blue,yellow) one after another into the glass. The mouth of the glass is then covered with a piece of paper and locked with a rubber band. The glass is inverted and placed on the table.
Finally the glass is covered with an empty cylinder. The third silk (say red) is spread over the cylinder and pushed inside the cylinder with a magic wand. The cylinder is lifted. The red silk is found inside the Glass in between the blue and yellow silk.
The glass is inverted once more. The paper over the glass is torn and the silks are pulled out. The red silk is found in the middle of a chain, knotted with the other 2 silks.