Craving laundry powder!!

I’m desperately craving to eat laundry powder!! It’s the idea of the grittiness on my teeth I think! Basically I’m looking for suggestions on similar (edible) things I can have to trick my brain into thinking I’m eating laundry powder haha I don’t know if it’s too much about the smell as anything along those lines seems to be in my head, like bath salts and bath bombs is another one where I just want to eat it and feel the grittiness I’m nearly 37 weeks and have already been told I have low iron / am anaemic in this pregnancy and I am taking additional iron Pls help 😂