Dildos are the classic sex toy, they come in a huge variety of shapes, sizes, textures and colors. If you're looking to buy dildos then in my opinion the best place you can go is EdenFantasys, they've got a fantasic array, just about anything you could want.
Types of Dildos
Realistic Dildos
Realistic Dildos are just as the name implies: they are made to resemble an actual penis as much as possible. There are some variation on the realistic dildo however.
The first type of realistic dildo is the standard type, it comes with testicles and sometimes with a suction cup on the bottom to hold it in place and vary greatly in 
size from very small to very very large. These tend to come in a cream color but are also readily available in light, medium and dark colors. These also tend to be the least expensive of the realistic dildo family.
Another kind of realistic dildo are those that emulate real skin, various technologies are used to acheive this, three main ones being Cyberskin, UR3 and New Skin. Although these tend to feal more realistic than their standard brethren they come in a much wider variety of colors, from the normal colors to reds, pinks, greens and more. These realistic dildos are a bit more expensive.
The third main type of realistic dildo is the celebrity mold, these are actual molds of well-known pornstars. And although they often aren't made of real-skin technologies they are usually the most expensive and made from the 'larger' actors.
Vibrating Dildos
There's a wide variety of vibrating dildos out there and we go into them in more detail on our vibrators page.
Double Dildos
These are also refered to as double headed dildos, double ended dildos, double dongs or double sided dildos. These dildos are often made of rubber and are the length of two standard sized dildos. They come in a wide variety of shapes, sizes and colors, the only constant being that they are made to be inserted from either end. 
Some double ended dildos are exactly the same on both ends, some are drastically different. Some have two sets of balls in the center are are in the shape of realistic dildos on each side, some have bumps, twists or other added stimulators.
There are double headed dildos that are solid and there are double sided dildos that are bendable, the bendable types can easily be used by one woman in a solo session.
So if you're a woman who likes it solo, or in a relationship, with either a man or a woman, there is a double dildo out there for you.
Strap on Dildos
These dildos are used by lesbian couples and by women whos man enjoys anal play. They are also often used in bondage and other BDSM activities. Strap on dildos tend to come in either standard, realistic form or in a shape that massages the male prostate. You can find a great selection at EdenFantasys.
Glass Dildos
Glass dildos are very artistic and extremely smooth and are made of either glass or pyrex, to learn more about these dildos please visit our glass dildos page.
Dildos for Men or "Ass Dildos"
These dildos are designed specifically for men, the are contoured to easily reach the prostate. Anal play by men is becoming increasingly more popular as men realise the pleasure that comes from prostate stimulation. You can find more infomation on on ass dildos on our anal sex toys page.