Alright let's get a mixture of the best ideas going to put in place the evilest of evil yet harmful pranks.
Put firecrackers in the fire. They explode, everybody's confused and stunned. Take the opportunity to slip away and pour ipecac into whatever you can. If somebody's stupid enough to drink from the punch, they deserve what's coming. Go inside and shit everywhere. Shit in the oven, turn it on, and take the knobs off. Hot baked shit smell emanating through one's house should increase the effect of the ipecac.
If you're not building an atom bomb, you're a pussy.