Can of Water Soup
From Homestar Runner Wiki
The Can of Water soup is the half-crushed, metallic, black-and-white can labeled "SOUP" that The Homestar Runner kicks around. In Kick the Can, the Can of Water Soup produces a wide variety of sometimes disturbing effects on The Homestar Runner, who explains that he has kicked the can around since his dog was "worshed away" in the storm of '28. No explanation has been given as to the connection between the Can and the death of his pet.
In Marzipan's Answering Machine Version 13.2, The Homestar Runner somehow utilizes it (or possibly another can of soup) and a length of twine to construct a functioning telephone that he uses to leave a message on Marzipan's Answering Machine, decades into the future.