FPS games can get a little repetitive after a while, so to mix things up when playing with my friends, we like to have one person leave the room and have the others customise their controls in the most bizarre way possible. It's a giggle watching someone trying to throw a grenade only to find out that it's the crouch button, or discovering, after minutes of experimentation, that fire has been assigned to the left D-Pad button.

Co-op controllers can also be fun, with each person taking one half of a controller, and trying to co-ordinate their commands with a team-mate. Even better, have one person sit with their back to the screen, and have the other person try and guide them. This is especially hilarious when playing Super Smash Bros.