Do you want to add some whimsical wall art to a room using minimal crafty energy for very little money?? Awesome:
1. Go to local thrift store
2. Find a dowdy boring landscape
3. Paint in (or print out/cut out/modge podge on) some [Insert cool thing here]
The "Cool Thing" could be space ships, robots, dinosaurs, black holes, Godzilla, the Emerald City, the whomping willow, a Death Star, Unicorns, etc.
Or Wild Things waving to Max.
For extra credit, paint the sky with glow in the dark stars/galaxy.