Giving value at a craft fair

I asked the question about how to give value at a craft fair before selling. I make crochet things, hats, dolls, bows… so it takes a long time to make something. I could give away something like a chapstick holder that I made, but that just seems pointless, not much value haha. I like the idea that they get one if they sign up for emails. What other ideas do you have? Could I give away something not crochet related? But it’s not showing my crochet value. I could do a drawing for a hat or something else in exchange for emails, but that doesn’t really give much value to everyone, just the winner.