Tattoos: who has them, what are they of, who notices and/or would like to lick them? Do all Stormtroopers mark their skin, or none of them? What kind of janky prison-tattoo parlour would Rey be able to find on Jakku? What is General Hux hiding under his perfect uniform?

Bonus for the Rebel Alliance tramp stamp that Poe definitely has
Double bonus for 5+1 who is too scared of needles.