Use this resource to set up class partners, so students aren't always working with the same friend, or by themselves.
When you want students to work with a partner, simply 'call out' a country by saying something along the lines of "Hoy, tu pareja es de _______". The students have to look at their map and find their partner from the country you said.
If someone is absent or you have an odd number of students, use your judgement and allow a group of 3, or whatever works best for the activity.
* I didn't include Spain because I focus a lot on Spain and where it is located when we read the novel Agentes Secretos y el mural de Picasso.
Agentes Secretos Unit Bundle Here