Johnathan Crawford’s “facial muscles exercise mask,” patented in 1987, is a plastic face mask with an inflatable lining “which provides the resistive force for the facial muscles to work against.”

Strap the mask to your face, inflate it to the desired pressure, and exercise your face against the mask’s resistance. When the timer goes off you can gauge your progress using the attached “calorie-estimating device.” (The patent abstract includes instructions for exercising the brow, eyebrow, eye, nose, lip and mouth.) Just don’t answer the door while you’re doing it.

Interestingly, in discussing prior art Crawford notes that someone had patented an earlier facial exercise mask that contained weights to provide resistance. He notes that one disadvantage of this scheme is “the potential for causing bruises to the wearer’s facial tissues with the weights smashed against them for effectiveness.” Fair point.