16. Observe the night sky and count the stars. See if you can define constellations.
17. Try bird-watching. Look up the name of the species in a book.
18. Spend some time gardening. Pick some fruit and prepare a dish together.
19. Take a few-hour trip. Share photos and thoughts about the places with the partner.
20. Look through a travel book and find the most exotic place both of you would like to go to.