Electronic media shredding
There is another area of security shredding that is not usually of concern personally but which is very important in a business.  This is the electronic media which can accumulate in a business.  CD's, DVD's and other electronic media, especially if they have been part of an IT environment should also be subject to physical destruction.  Many commercial shredders will incorporate this capability into the devices and it is a feature that when purchasing a shredder may be worth considering.  Knowing that such material has been safely destroyed prior to disposal can be comforting