When you're doing partner activities do you have a difficult time assigning partners? This completely eliminates all of those difficulties!
The continent buddies is similar to clock buddies but for older kids. Simply take a few minutes at the beginning of the year or grading period and have students (or assign) select people they want to work with. They will need to pick 7 partners so each continent has a partner.
When you're doing partner activities simply say work with your "Africa" partner and problem solved!