Slytherin in Sorting Hat

[theadimail]

No: HPFGUIDX 99160

Hi,
  We know that The Sorting Hat has elements of all the four founders 
of Hogwarts in it. If Godric Gryffindor's element was his sword which 
Harry pulled out, true to Gryffindor's essential quality  which is 
supposed to be bravery, what could be the element of Salazar 
Slytherin that is hidden in it? Would this have to be pulled out to 
defeat Voldemort or at least tame him in one more battle? Even if its 
not used as a plot device I would even be interested in what  each of 
the founders put in the Hat.

Bye
Adi