The children beg to be given the empty cartons to take home. I made my Spanish flag out of a large piece of posterboard and used non-fading construction paper. I copied the logo on the flag from that website. I precut pieces of red paper to be stapled on the top and bottom. On the other end, they string a yarn handle.
Children are also more interested in painting when they can see a portrait of the artist.
The children will be asked to dress in as much red and yellow as possible. There will be small premios for the winners in each grade. The Spanish flag will be hanging outside with lots or red and yellow crepe paper. This activity should get them psyched for the actual El pelele en la primavera day to honor Spain. Another angle you could pursue would be the weeklong celebration of carnaval .