Watch a foreign film or a travel documentary to learn more about a culture different from your own. Talk afterwards about what you found most interesting about the people and their way of life.
Support an exchange student from another country. If it is not possible to have someone live in your home, contribute money to sponsoring organizations and attend events where you can meet foreign students.
Have a potluck dinner at your church, synagogue, or club, sharing dishes from other countries. Come prepared to talk about your dish or, if you have traveled to the country, to show pictures.