Possibly the mask slot could be used, obviously no one w2ould smoke a cigar while wearing a mask. I really don't know a lot about modding just thought it would look cool
I'm not sure if it can be done, but it would be cool if our badass vault dweller could go around chomping a lit cigar. It would be nice to have a cigar smoking animation, but just being able to equip a cigar would work fine