I have always had very long hair. My partners loved when I would give them a nice massage followed by me letting my hair trail from their shoulders down to their butt cheeks and back. They compared it to the exotic tickling of silk veils.
My fiance likes when I tickle his back with my nails or scratch his back. I think most people enjoy this though. I mean, I know I do. I haven't met anyone who ever said they didn't like it lol