You're full of knowledge, right? (Not just about what Tracey from accounts did at the Christmas Party). Pen a free newsletter and share it with your customers. Give them useful stuff - tax tips if you're an accountant, low-fat recipes if you're a gym instructor. When they're ready, they'll buy from the expert - YOU.
Gloss Folded Leaflets make great mini brochures - easy to handle, cheaper than a booklet and cheaper to mail out.
Are you looking for professional looking leaflet dispensers? See
here for details.