Do you give out little extras with your sales? I've found it to be a great way to promote yourself and make the customer remember you!
I'm a jeweler, and I offer a freebie of a vintage fabric button (I have a button maker press) and a set of Little Pretties stickers...and occasionally I'll throw in a little pair of stud earrings or a hand-drawn magnet or something to mix things up. I love receiving freebies, so I can only imagine my customers like to get them too! (And of course all extras have my business name and Etsy address).
Oh, and I also made coupons with a 20% off coupon code for the customer's next purchase. I've had a lot of repeat business because of this!
What special things do you give your customers?