I thought that making a stuffed Hobbes doll would be a great gift for one of my sons (whose name coincidentally, is Calvin). However, I knew that the artist, Bill Watterson, famously refused to allow his characters to be licensed and sold as dolls and such, feeling that doing so would undermine the integrity of the strip.
So I was kind of hesitant to make this and offer a pattern and instructions for it online, out of respect for Mr Watterson. I concluded that it shouldn’t be an issue as long as the pattern is available free, for personal, non-commercial use. I’m not selling the pattern or the doll, and you shouldn’t either — via instructables