I think the best thing to put on a flyer for this site is questions. These would be exemplary questions that sound interesting to people, similar to the ones that parenting has:
In the format: Question, Image, Tear off slips + QR code.
This seems like an intriguing historical question.
This isn't a question, but as it's a motto/tagline it just fits so well
And I've love to see it on a flyer!
We seem to be short on player-centric questions. Here's one: