You can ask your guest to make a nice Valentines Day tattoo on their partner. For this you will need to prepare some body paints, face paints, or body markers to decorate with. You will also need to have some towels or washcloths on hand for any cleanup. After all the guests have made their tattoos, have everyone admire each others tattoo and vote for their favorite. The guest who created the highest voted tattoo wins the game.