What should I photograph for observational drawing in my final for GCSE art?

For my title, I've chosen Fantastic Forms, Storytelling. I'm writing a story, with dragons, princesses, etc. I'm writing it in calligraphy, on a triptych I make, & the arty side will be images of lines & quotations from the story. Problem is, I have no idea what to take photos of for the prep for observational drawings. I can't exactly take a photo of a dragon, & i have no volunteers to dress up as characters so I can use them. Suggestions..?