Sorting a stack of cards with help of a computer
Setup an array of initially empty file folders (even better buy a mail sorter and you are in the pigeonhole sort case).
The computer, knowing the initial order of the cards, will tell you, one by one, where to put each card (you have a limited number of folders so instructions like "take the current card and place it on top / bottom of folder 3" are quite easy to follow).
Manually sort each non empty folder using insertion-sort.
Visit the folders in order and put all cards back onto the table.


(repeat n times and you're ready for the parcel delivery office, almost... a railway post clerk was required to sort 600 pieces of mail in an hour with 97% accuracy in order to keep his job :-)