The upside down can
An upside down can.
"But why?" I hear you asking.
Orangina is one of those fruit drinks with pulp in it.
And as you know these sort of drinks require a mild shake before drinking.
So Orangina labelled their cans the wrong way around. So that when you turn them right way up to drink the pulp is mixed through the drink.
Genius I tells ya!
Apparently it wasn't Orangina's idea though. I was created by their agency BETC in Paris.