If you're in the market for an uncomplicated sex toy, dildos are the simplest sex devices one can use! Dildos are used to give a deep satisfying sensation of fullness in the vagina or anus. They can even be used to simulate fellatio! Because dildos do not vibrate or contain metal components, they don't require batteries and can be taken into the bathtub or shower. Dildos can come in a wild variety of shapes, sizes and materials, but dildos are always designed for one common purpose: penetration.