I'm not sure how much help this is, but I will throw it out here anyways.
I teach first grade and each year the kids have to write "All About Books". This means they need to take facts from non-fiction books and then write about their topic in their own words. I find that they always just want to copy the information right out of the book. What I had them do this year was make an information web for each specific section. Then, when they drafted, I didn't let them have the book that day.
For example, a "Where Ants Live" web might have "mud", "dirt", "sand", "houses", etc. that the child got from the book. Then, they would have to write a sentence for each "spoke" on their web when they did their draft.
I'm not sure if this is the kind of idea you are looking for. It's not particularly creative but it did keep most of the kids from copying directly from the books.