A good prank if you have kids (7-12 years old) sharing a bedroom. Daddy wishes them all good night: “Good night Steve, good night Gail, and good night monster under the bed.” (cue for mother to use her walkie-talkie placed under the bed: “Good night.”)
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Soak your friend’s toothbrush overnight in water with loads of chili peppers/cayenne pepper in it for some extreme dental hygiene. He/she will definitely wake up fully.
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Rip the speaker and battery out of a singing Birthday card. Hide in a car when you know your beloved spouse will drive it soon. You can of course also hide it in your beloved colleague’s desk – preferably one that you don’t share an office with.
    Compiled from the internet