Most dildos look like dicks. But they can also have the shape of a woman, dolphin or whale, while they can also be smooth and featureless. Some dildos have bumps for extra stimulation. Theyl come in different sizes.
There are dildo’s that are rounded at both sides, made for lesbians who want to be penetrated simultaneously. They can also use a strap-on dildo or one worn around the thigh.
Some dildos have a curve to stimulate the G-spot. When you are on your back, the curve should point upwards, towards your navel. They can also be used by guys to stimulate their prostate.
Many objects in and around the house can be used as a dildo, like the handle of everyday utensils, a candle or some fruits and vegetables. Cover these with a condom. You can also use your fingers.