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As mentioned above, there are many different categories of products for power. There are some common themes among the various categories. The main one is the stimulation device.
For the most part, most of the products that are marketed as "toys" actually have a sex function. They either use the body's own hormones to stimulate the penis or they use stimulators to get your arousal levels up. Some of them actually vibrate to help you reach orgasm. The vibrators are what most people refer to as "toys" because they have a "toy" type feel to them. That's not what a vibrator is supposed to feel like. They feel like you are in an adult toy store. The best way to buy a sex toy is online. You can get many of the toys from the sex toy store, or find them from an online classifieds website. It doesn't matter which one you buy. They all need to be used right away. It's a pain in the butt, but there is nothing wrong with that.