Here are a few ideas.
Ideas for staying home
1. Give each other a massage.
2. Cook a meal together.
3. Have breakfast in bed.
4. Have a movie marathon.
Ideas for going out
5. Go out for dinner.
6. Skip dinner and just do dessert. Try sharing a huge banana split!
7. Visit a local bookstore or hobby shop.
8. Stop in your favorite coffee shop.
9. Bowling or ice skating.
10. Go for a walk at midnight and go stargazing.
11. Take a winery or brewery tour.
12. Balloon rides.
13. Attend a festival together.