Butterfly strap-on vibrators have been around for decades; you can even find them in some of the earliest Adam & Eve catalogs. Designed for hands-free fun, these strap-on vibrators are made for masturbation instead of role reversal or pegging. The user slips a pair of straps around their legs and ties another strap around their waist. This presses the body of the vibrator against her vagina. By using a butterfly shape, the wings can tease her lips while the antennae stimulate her clit at the same time. While butterfly vibrators can be worn around the house and some even in public, they’re most often used for foreplay in the bedroom or masturbation at home. Look for butterfly strap-ons that come with a multi-speed vibrator – the extra power is definitely worthwhile.