Paper shredders have been used to get rid of sensitive documents for quite some time, but simple ones are barely better than ripping papers by hand. This was clearly proven a couple of months ago when the Korean cable TV channel JTBC's news team was able to recover crucial evidence relating to the ongoing Park Geun-hye - Choi Soon-sil Scandal that's rocking the nation from bags of shredded documents (news in Korean).
Celine shreds her work by herself with the shredder
Since I have a hand-operated paper shredder at home, I decided to have a bit of fun by re-enacting this process with my daughter Celine. We call it the "JTBC play". After Celine created a "document" to shred, she put it into the paper shredder. I think she likes the feel of the paper being cut up by turning the handle.