If you were a child of the '90s, you're probably familiar with Sky Dancers. These dolls had an impressive wingspan and a pull-string base. Simply put the doll on the base, pretend you're starting a push lawnmower and voilà! You've launched a spinning propeller that will fly in unpredictable directions.
Sky Dancers turned playtime into trauma time. There were reports of scratched corneas, temporary blindness, chipped teeth, lacerated faces, broken ribs and concussive injuries. After receiving 170 reports of the doll striking children and adults, causing 150 injuries, the Consumer Product Safety Commission banned the toy in 2000 [source: CPSC].