I write a lot of first-chapters. They're explorations of ideas, characters, or premises that I think a really good story could be written about. Sometimes I write that story. Usually I don't. And sometimes, I put the chapter in the Book of Beginnings so other people can enjoy it - or even write a story if they can figure out where to go with it. If you spin a tale around one of these, give me a shout-out so I can see what you did with it. I'm making these public-domain, so absolutely do NOT worry about taking it in a different direction than you think it looked like I was going. The characters, ideas, and premises belong to everybody. The stories you write about them are unequivocally yours.