1 method i often use is to refer pupils back to the key question for the lesson and then in their pairs 1 has to explain to the other the answer to the question - the second person has to listen because any one of the 'listeners' could get picked to explain to the whole class what was just explained to him.
my classes are all clearly lettered - every pair has a person A and a person B - this ensures rotation of the explainers and listeners. I am sure that one day an anarchistic pupils will rise up and announce - "I am not a letter I am a free man!"














