I think one of my favourite ways to masturbate is more about a state of mind, rather than a specific technique.
I am very interested in looking at the female form, and love photography. I have found that with my digital camera, I can be a part of that. I'll be reading erotic stories, or just thinking about sex, and I get out my camera, and start posing.
I find just the setting up of the camera, deciding what to wear, or what not to wear. The positions I want to try ... it all makes me get very excited. I'm not into close up biology shots, but more an erotic session with myself. After I take the shots, I put them on my computer and view them. I find my self-esteem has been a lot better seeing the photos, and I share them with my husband.
After I take the photos, I find a moment or two to touch myself, let myself go in the moment. I'm always hyper sexual after taking the photos. An orgasm is very easily reached with little touching. I think that when you photograph yourself, you find things out about yourself, and your sexual self that open you up to new things.
Why not try it ... get out your camera, and let yourself go. You don't have to share them with anyone, but my husband doesn't mind my favourite past time. Enjoy your body, and open your mind.