A sex toy is an object or device that is primarily used to facilitate human sexual pleasure, such as a dildo or vibrator. Many popular sex toys are designed to resemble human genitals and may be vibrating or non-vibrating. The term sex toy can also include BDSM apparatus and sex furniture such as slings; however, it is not applied to items such as birth control, pornography, or condoms. Alternative expressions include adult toy and the dated euphemism marital aid, although "marital aid" has a broader sense and is applied to drugs and herbs marketed to supposedly enhance or prolong sex. Sex toys are most commonly sold at a sex shop, but they may also be sold in a pornographic DVD store or head shop. Today's sex toys are available in almost all countries for male and females.
Another form of sex toy for both men and women are those for erotic electrostimulation.

Erotic electrostimulation refers to the act of using electricity for sexual sextoy stimulation. Electrostimulation dates back as early as the mid 1700s. By the mid 1970s, medical transcutaneous electrical nerve stimulation (TENS) machines were widely available. The machines work by stimulating nerve endings with electricity, sending signals of stimulation to the brain. Electrostimulation works off this same principal, when the brain received a signal of stimulation form the genitals, pleasure hormones are released.
Ben Wa balls are hollow metal balls inserted vaginally which can be worn inside the vagina for extended periods of time. The internal rolling is claimed to enhance orgasms.
A dildo is a non-vibrating device which is used for sexual stimulation of the vagina and/or anus. Dildos are generally made of silicone rubber, but can be made of other materials such as metals or glass. They are often made to resemble a penis.
A double penetration dildo is a long, usually flexible dildo with both ends designed for penetration. It allows for mutual penetration between two persons (or for double penetration of a single female, both anally and vaginally).
A strap-on dildo is a dildo worn in a harness, used to penetrate another person.
A horseshoe is a non-vibrating sex toy which is shaped similar to a horseshoe, which is put into the vagina and anus at the same time. It is made with softer plastics.
Kegel exerciser, also known as vaginal barbells or jugglers are designed to improve muscle tone in the pelvic floor, and can be used for sexual pleasure as well as enhancing vaginal response.
A sex-machine is a motor-driven device that combines penetration with rotational and/or reciprocal movement.