If you're interested in adornment, then head to a lingerie shop or a sex toy shop and ask if they have any corsets, or bondage boots, or harnesses. All of those things do have elements of bondage-like restriction, constriction, even shape shifting of the body. And so, if you're into fashion, that might be a good entry point for you.
The last one, stimulation, my favorite, is sensation bondage, which is using materials, all sorts of different materials, to make your bottom or yourself aware of their skin and the sensory experiences that they're feeling. I think that is a wonderful type of foreplay.
