the thing your dad yells at your about for stealing it to fix your stuff.
also fixes anything thats broken, even if it isnt. good cover for anything you want to hide, and you can use it for making cool stuff!!
dad: wheres my duct tape?
daughter: i dont know..
dad: you do too..
daughter: i uhh used it *hold up note book cover in silvery goodness*
dad: STOP USING MY DUCT TAPE!!!!