Female led relationships discussion

I found a really useful way to hold someone down for spontaneous fun while out, without needing any extra gear. If my partner lies on his back with fists near his ears, I can stand over him in my heels, pinning his wrists between the heel and sole. Then I adjust my underwear and sink down onto him. (Just make sure your heels are at least 4 inches high unless he has very slender wrists). I’m curious if you have any convenient restraint methods for spontaneous sessions that you’d like to share?