i.e. woman must not wear panties (only tampon) when in public, must provide messed up pads to her master, must lick her own pads or suck on tampons. How about those ideas?
They don't do much for me, but they might for somebody. How about going a step further? When at home, she can't use anything at all. He likes seeing the crimson smear on her pale inner thighs, the red flecks on the gleaming kitchen linoleum tiles, the raspberry swirl flowing into the bathtub drain when they shower together in her time, etc. I can get into almost any aspect of menstrual play except for consumption. I don't mind the thought of going down on a woman during her period, but that's quite different from sucking the blood out of a pad as if it was a used teabag.
I hope someone picks up the idea and runs with it. I haven't seen anything like it on Lit.