Art supplies, atlas
On a large piece of paper or poster board, draw the outline of the American flag, or any other country's flag design. Give your child the appropriate colors in markers or crayons to fill in the spaces. Or fill in the spaces with a collage of colors taken from cut up magazines. Get out an atlas or globe and explain where the flag is from -- you could also look up some interesting facts about the country to write on the back of the flag.