Hair Drying Cages
Unlike the modern incantation of the traditional hairdryer, each one of these prongs was charged with electricity and heated to a point that they could potentially burn the person's ears and hair. The current version of the hairdryer is much more accessible if you don't want to scorch your hair off.
Beauty Parlor Plastic Surgery
Plastic surgery used to be much more accessible than it is today. You used to be able to get lip fillers and dermal tattooing at the same place that you would go to get your hair and nails done. The individuals that used the devices were typically not certified or experienced enough to administer their effects.