Navarrovizcaino,
The idea of "A Country Scavenger Hunt" suggested by Edrodmedina sounds good to me!
I suggest that you choose items to which there could be several different answers. Here are some suggestions, to which there is no correct answer. Choose whichever suit you.
1) Give the recipe for the favourite Dish of that country, with all the ingredients and the cooking method.
2) Give the plot (story) of the most recent Film shown in that country.
3) Give the name of the favourite Holiday place in that country, describing a typical holiday of one week for a family.
4) Give the name of the most popular Festival of that country, describing it in detail.
5) Give the title and opening words of the most popular Song of that country.
6) Give the title of the favourite Children �s Book of that country, and a short description of it.
7) Give the name of the most famous Monument of that country, and describe it.
8) Give the name of the most popular TV Actor of that country, describing his/her act.
9) Give the words of a popular Proverb of that country, and what this proverb means.
10) Give the name of the most popular Dance of that country, and describe the movements.
I hope that this helps.
Les