Ironman, Captain America, Thor and Hulk from the Avengers Free Printable Coloring Masks. You can use them for funny costumes, for an Avengers Party, Carnival or whatever you want.
You can even just give them to your children to play!
If this is for the party: it can be part of the Party Activities, so the kids colored and cut them, or to give them as part of the Party Favors.
If you want to print them in a poster size, you can use "posteriza" (free download).
Download here the Avengers Free Coloring Masks.