Apart from the T-shirt I regard the flyers as the second most effective way of promoting steemit. There is literally everything the user needs to know about steemit on the flyers.
Steemit promotion has never been better with the flyers and will always move to it even when I am wearing my T-shirt. And as you will know it there are others who will forget all what you have told them after promoting steemit to them so it’s an essential tool.