Hmmm...well there is shaving the family pet(s). That's always good for a laugh if you're into being gouged open like a field dressed game buck.
Shaving the kids is good for a giggle too. Especially if you have daughters. Messing with their hair is highly recommended.
Juggling lit dynamite, time it just right so it falls into a deep chasm before it goes off. You'll need to supply your own chasm.
Mentally abusing your holiday ornaments as thy sit, once more, gathering ust in the garage, ttic, spare room, whatever. Make comments about them notbeing as sparkly, shiny, or somesuch. They hate that.
Run around the house totally insane, bashing everyone with a French loaf.
Pick your nose and then arrange it all on a sheet of posterboard and call it art.
Pluck nose hairs out one at a time.
Conduct an intellectual conversation with your breakfast cereal.
Conduct an intellectual converation with any food you might have.
Psychologically scar your children's stuffed animals.
Stay all day in the loo with the door locked and make car noises while on the pot.
Keep your hand in your pocket whilst talking to the better half and jingle your change as loudly as possible.
Shall I continue. I mean this is...oh hi, doctor...
(I do not literally condone any sort of abuse directed at children or animals, so please keep the hate to a minimum. It's all in satire anyway.)