Daughter wants a duck for her daughters wall, I couldn't find a duck I liked, So I went to Wikipedia for a vector, and viola! Printables has a duck!

Original License

https://commons.wikimedia.org/wiki/File:Duck_vector.png

This can be printed at any X, Y, Z, but I recommend you keep X and Y at scale, and print Z in multiples of .25mm. That's just my go to solution for wall art. 

(My sample print is held to the wall with sticky tack, looks terrible because the yellow is transparent, going to replace with some transparent glue)