I don't know that I'd choose to do this on a wall, but cool idea just the same. DIY project using a variety of colorful magazine pages cut into strips. Pick a silhouette/trace an outline. Then cut up the magazine strips and tape/glue it all together.
WINTER Penguins & colorful background -- How cute are these? Not too worried that my graders might find this too young for them. It's so darn cold outside that they'll love decorating a penguin. Good 2 part art project for them.