I agree with Sylwia - information gap games are good. A TV schedule with the times blanked out, for example - each partner has different blanks, and they must question their partner to reconstitute the schedule.

 

Also anything involving a random element, like a dice to choose the question or cards to draw and include in your answer.

 

"Battleships" works well - you create a grid with e.g. 6 pictures across the top row (e.g. 6 places in town) and 6 other pictures down the left-hand side (e.g. 6 forms of transport). Students colour in their battleships on the grid. They then try to guess where their partner�s ships are hidden, but instead of using grid coordinates in the classic game (A6, B3 etc.), they have to make sentences using the elements ("I take the bus to school" / "I ride my bike to the park" etc.). 

 

With any speaking activity in pairwork like this, make sure you model it first with the whole class, so that students are confident doing the activity independently afterwards.