This is one of my favorite designs of all time. I love this chicks. Many years ago, I was doodling one day in school and these little guys were the result. I've used them in many different projects.
The first greeting card I made with it. I really love the yellow that I chose here.
Here I've cleaned them up a bit...
and rearranged them.
Then several years after the original sketch I finally took them into Adobe Illustrator and made a vector image.
I even made a poster for my friends that they could hang in their baby's nursery.
2014 UPDATE: I revisited this design and came up with a new poster. I really love the different colored chicks!