My boyfriend once said, "if you don't have yarn fuzz on your clothing, can you say that you've been inside our apartment?".  And THAT right there is true.    There is always a small pile on the ottoman of my crafting chair that is the clippings from my current projects.    And I truly believe that they have a mind of their own.  They have a soul that would like to travel around the world similar to spores from plants and they jump onto whomever comes within a 20 foot radius.  So whatever is my project of the moment, you can tell the color and type of yarn by looking at the backend of me or my boyfriend.  Or if someone ever broke in, I could just tell the cops to look for someone with (fill in the color and type of yarn) on their clothing!