Because Japan is just really fast in making fanart (and charlotte is today’s Key Oekaki), there’s enough fanwork to warrant sharing. Here’s what I’ve found so far
Source: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=47698806
Source: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=47694324
Source: https://twitter.com/9scp/status/547755579133808640
Share any others that you may find as well, and remember to include the source of the artwork If you don’t know where it came from, this website helps a lot: http://www.saucenao.com