We have a steady supply of black and white bookmarks for our students to take after they check out a book (or even if they forgot one). They enjoy coloring and taking them to use with their new books. We figured "Why not let our students design a bookmark?" They loved the project last year, so we're rolling it out again. I love how this allows some students to express themselves in ways they might not always get to in library class.
Have a healthy supply of black markers on hand.
Create a place to turn in entries; some friends will finish quickly!
Decide if you will allow students to trace or use guided drawings; these are frequent questions.
After the due date, I scan the bookmarks and load them into a Google Form. I share the form via QR code, then allow students to vote for ALL the bookmarks they like instead of limiting voting. I also keep this step anonymous so no one know who made which bookmark.
After voting I choose the top four or five bookmarks as winners in each grade. I send the scanned bookmarks to our district print shop where they're printed on cardstock and cut. As an extra prize, I give each winner a stack of ten of their own bookmark to share with friends and family.
When winning bookmarks are set out for students to color, I make sure to display the creator's name next to the bookmarks.