These perfectly sized thick pieces of paper have been used by writers since they were invented. Perhaps writers just used paper before that. Why do index cards work so well? They give just enough room for a few sentences describing a scene or character or setting, they can be organized and numbered, easily reordered, and [...]
Make up a cool title, and then write a book or short story to go with it. Sound backwards? It’s actually a good way to get the ideas flowing. You could use a line of poetry, a single word, an oxymoron, or just about anything that grabs your attention (and isn’t under trademark).