My wife and I have engaged in various BDSM kink since we started dating. We are both switch personalities - she is mostly dominant, but will exercise her sub side often. I am mostly dominant, but generally submissive to her.
We enjoy various things, from cock and ball bondage, teasing and denial, edging, and extended orgasm / forced orgasm play, to mild bondage. She particularly enjoys role-play, dressing for sex, and fetish wear.
We've got all sorts of toys and outfits in our collection, things like shackles, cuffs, e-stim gear, medical toys, and various sorts of ropes and cords.
Our first BDSM experience together was while we were dating - KK had me role-play an abduction and sexual coercion scene out with her. She was barefoot, blindfolded, gagged, wearing just a t-shirt and shorts, with her wrists bound behind her back, and her ankles bound, in the back seat of my car. We went to a deserted industrial complex, where she wanted me to use her mouth, pussy, and ass. KK scripted the whole thing, and made me memorize it before we had our "bondage date."