Going on wife #4 and so many live ins I have to get a pencil to remember, I would say....... Jewelry......... Doesnt have to be expensive, just nice looking and gift wrapped. Trust Me JC nothing perks up a Lady like a nice braclet, ring or necklace. A small note attached with even the smallest bouquet of flowers and you hit the bullseye. If ya know where I'm drifting big guy.
If she'* old enough, a bottle of good wine thrown in and you'll be searching for your socks in the morning.