The first Coors can I ever saw had a vent in the top. Early 80s. My brother Jim and one of his Navy buds brought 2 cases from Colorado while on leave.
I don't think anyone will sober up for lack of gimmicks...
He that would make his own liberty secure, must guard even his enemy from oppression; for if he violates this duty, he establishes a precedent that will reach to himself.
Thomas Paine