A topic for every kind of blank page
One wheel covers a lot of stuck moments. Use the conversation set as an icebreaker or a dinner-table prompt, the debate set for a class motion or a practice round, the writing set when a story will not start, and the drawing set when a sketchbook has been open too long. Science, history, and tech give you something to research or explain, and the funny set is there when a group just needs to loosen up.