We rigged up the doorbell, so it let out an earpiercing scream when it was pushed. It fightened off a few trick-or-treaters, but made our arriving guests giggle.

We placed an infra-red sensor in the bathroom, which set off an evil hollow laugh when anyone went to the loo (bathroom). If the guest didn't go in looking pale and ashen, they certainly did when they came out.

We had a plant which moved up and down the television, using a handmade wheeled platform and electronic timer.

At 11pm, all the lights went out and the evil laugh from the bathroom was played at deafening level. Scared everyone witless!

Food: