I never check to see if stuff has been suggested I usually just throw my idea out here.
Give every player a 1-2 slot space that would represent our characters anal cavity. This was way we could hide things like handcuff keys, spark plugs, or any other tiny thing. The point would be so maybe if some one captures you you have a space they would have to kill you to search. Or maybe atleast risk getting sick if they check it without gloves and mask. Could make for interesting escapes.