The objective of this kids activity is to educate group members on specific countries and cultures.
What you need
Choose a country as a theme for a day, eg. Greece.
Play Greek music, make some Greek snacks and if possible have someone come in to speak about Greece, someone who may have lived there or if from that country. They could bring in some home videos or slides to show the group.
Each week/month pick another country to visit and mark it onto a big world map that can be on display for the group to see.
Visit your local travel agents for brochures on the country and even ask around to borrow souvenirs from that country.