Often your best masturbatory friend is an inanimate one. It can also act as a convenient sponge. Remember, the key is in regular washing. That, or replacement after the first few flings. A big sheet of glass can be mightily useful.
Hands are often the first thing people turn to to fulfil their desires.
Let me suggest some other body parts. Well, I hope this helps you out next time you find yourself alone. Some still do . No one really knows why. It didn't work well for other dot-coms, who threw it in simply because everyone else was doing it, and therefore believed they had to offer it too.