For the confetties, it happened to one of my brothers in 1972. Hot summer night, when him and his wife left the reception and turned on the vent? Blasted with confetties.
For the Rice Krispies, it happened to my oldest nephew in 2003. My youngest brother was their best man and took the newlyweds rented Mustang for a spin to supposively wash it after the meal, before the dance.
He filled it up with Rice Krispies

The Newlyweds went to bed at sunrise since after the wedding - before going to their hotel room and consumate their wedding... - they had to find a gas station that had a vacuum to clean up the car!
