I've created a fun Thanksgiving writing prompt. All you need is a die and a pencil. With each roll you'll choose your description, character, setting, and conflict. Then you'll get to plug them into a story. It will look something like this:
Once upon a time there was a (description) (character) who lived in a (place). More than anything he/she wanted (conflict). But (then you get to create why they can't achieve or obtain their want). So, (then tell how they were able to over come it).
Writing prompts are really fun and are an excellent way to help kids to start writing. I even included a place for them to draw a picture of their story. You can download it here.