"It must’ve broken down long ago… Probably a gardener robot. It protected this place even after the people went away."
Word Tracking Spreadsheets - These sheets also have sections for character and plot information.
『 海月姫 / Princess Jellyfish 』 (Film 2014）
I think an excellent and challenging exercise for narrative writing would be to select at random a handful of elements from The Periodic Table of Storytelling* by James Harris. It’s wonderful:
[make sure to click through for the full version]
*fair warning to teachers: unfortunately, some of this is probably not quite safe for the classroom.