hi! so I just found out about a contest that grades K-12 can enter, is is called  Doodle 4 Google where students in the United States to use their artistic talent to think big and redesign Google's Doodle for millions to see. the theme is  "My best day ever..." One talented student artist will see their artwork appear on the Google homepage and receive a $30,000 college scholarship. And their school will be awarded a $50,000 technology grant.

here is the link if you are interested

[link]