You have a wonderful sex life and both of you are very open-minded. Both of you have done just about everything and are actually going to venture down another road. You are looking for some more sex ideas and nothing is off-limits. The best way to begin is to talk to your partner and ask her what she may like to try. Here are some ideas to start with.
(1) Use sex toys
Clothespins make wonderful toys. They can be clamped onto any part of the body (for example her nipples) and the sensation is quite intense. The longer they stay on, the more intense the sensation when they are taken off. You can clamp the clothespins to nipples or anywhere along the breasts; along the dies, arms, legs and thighs and almost any other place you can imagine. For more intense sensation, plastic clothespins will be better than wooden ones and small clothespins will have a sharper ‘bite’ than large clothespins.
A pair of chopsticks and a couple of rubber bands can also be used to make improvised clamps. Put the chopsticks above and below the nipples, or along each side of the clitoris and rubber-band them together at the ends.
Ordinary dental floss makes great nipple bondage. Tie a slip-knot in a piece of dental floss and pull it snug on her nipples.
Brushes of various sorts are excellent on bare skin, especially when she is being blindfolded. For example, a soft brush such as a shaving or makeup brush can be alternated with a stiff brush such as a toothbrush on breasts, nipples, thighs, sides, etc. An electric toothbrush makes a wonderful sex toy when used on the clitoris.
Ice is a great all-purpose sex toy that can be used in a number of different ways. You can either run an ice-cube over her body especially when she is being blindfolded and/or bound; or place an ice-cube in your mouth and run your lips and tongue over her body.
Feather is also a great way to turn her on. It can be any type of feather but I would highly recommend that you buy feather products from a craft shop not a sex shop because those real bird feathers that you find on the ground may contain parasites and germs. A peacock feather is common because the end is round and blunt. First you blindfold her and you can tie her up if you want. You run the feather over her body and apply some tickle torture on her. The premise of tickle torture is that she struggles against you but she cannot get away from being tickled and she cannot even scratch the itch because she is being tied.
(2) Use light bondage
If you want to explore bondage, the easiest way to do this is with plain old cotton or nylon rope. Nylon stockings and silk scarves can cause problems because they tend to bunch and become difficult to untie. When you experiment with bondage it is always a good idea to have a plan about getting your partner untied in a hurry if you need to. One good tip is to keep a pair of bondage scissors handy which you can get inexpensively at most drug stores.
You can tie your partner to the bed, to a chair, or simply bind her hands behind her back. Once you have her bound, you can kneel over her and tell her to perform oral sex on you, or you can penetrate her. Or, you may like to try sensation play such as running your hands or ice cubes or improvised sex toys on all over her body. Blind-folding her can make these sensations more intense. You can add a little bit of light pain play to the mix by pinching, pulling or twisting her nipples. Biting her or teasing her with tongue or fingers can be a lot of fun too.
For introductory pain play, spanking, pinching and biting can be good ways to begin. You may bend her over your lap, or for a bit more fun, you can tie her down bent over the bed. You can combine this with role-playing. You will be acting as the teacher disciplining a naughty student. You can spank her with your hands, a paddle, or even a wooden spoon. Start with light rapid strokes and gradually, you can get those endorphins (pleasure-related hormones) going, which is exciting and intoxicating.