Get out a piece of paper to do a little math.
Measure the length of each can, top to bottom.
Write this down on the piece of paper and add it up.
To that total, add 13 more inches - 5 for the top, 5 for the bottom, and 1 inch for each knot.
Cut a piece of wire to the length of that full measurement. For me, it was 26 inches.
Measure 9-inches from one of the ends of the wire and tie a knot.
Thread on the smallest can to the long end of the wire, with the open end of the can pointing down.
Measure the length of the second can and subtract ½-inch.
From the top of the bottom can measure up that distance on the wire and tie another knot.
Thread the second can on the long end of the wire, with the opening pointing down. It should overlap the bottom can a little.
Measure the length of the top can and subtract ½-inch.
From the top of the second can, measure up that distance along the wire and tie another knot.
Thread the top can on the long end of the wire, with the opening facing down. The can should overlap the middle can.