Halloween // Couples costume for welcome party/rehearsal dinner

My fiancé and I are getting married on November 1st and our rehearsal dinner and welcome party will be a Halloween costume party! I’m brainstorming ideas for us to - what are some couples costume ideas? I don’t have to wear white, but that would be a bonus. So far I have:

Buttercup & Wesley Morticia & Gómez Lydia & Beetlejuice Sally & Jack Corpse bride Angel & devil (kinda lame but I’d get to wear white)

Open to more creative/abstract ideas as well!