Sex and Mischief series Feathered Nipple Clamps. These Feathered Nipple Clamps feature luxuriously soft feathers that tickle the skin as they sway. This product is available in a sophisticated shade of black. This product is adjustable. Category: Fantasy Accessories and Toys. Designed to redefine! The Sex and Mischief Collection by Sportsheets has taken the adult industry by storm. Sex and Mischief from Sportsheets keeping couples connected. New images added August 21, 2013.