Here are some holiday cards from the official Balto site. Click the link, fill out the form, and color to make them functional.
Here are some Christmas ornaments from the official Balto site. Print them out, cut them out, color them, tape/staple them together, tie a string through the hole, and hang them to make them functional. Click the image and print it out. There are Balto, Boris, and Balto & Jenna for you to print out.