I remember buying short extension leads for hot swapping joysticks & mice they were about 15cms in length they came as a pair with a plastic ring round the two cables to hold the leads together, one of the leads was grey and the other was black with a red coloureed band around it.
There was also extension leads of about four feet in length, so you could sit on the sofa instead of sitting on top of the tele playing games, these leads were great for playing formula 1 when you had to share the joystick with the next player when it was there turn.
