Tape up multicultural posters and banners that have kids of various cultures and ethnic backgrounds. The picture should have examples of students or children doing activities together such as homework activities, holding hands or playing together. You can visit your local teacher's store or online stores, such as Amazon, to purchase posters and banners.
Create an activity where students can draw pictures or make crafts that relate to their ethnic backgrounds and then pin each student's picture to the classroom walls.
Decorate the classroom with multi-ethnic dolls with multicultural play food. If you wish, allow the students to play with the dolls and the fake foods. You can purchase dolls at online stores such as Wal-Mart, Amazon and Lakeshore.
Decorate for special ethnic celebrations. Learn about each students background and find information about certain holidays and how each holiday is celebrated. Implement decorations such as a pinata for Mexican holidays or decorate the classroom with Chinese New Year takeout boxes. You can purchase ethnic holiday decorations at Oriental Trading and Party City.