One of our newest members, kellibeans was so kind to make this AWESOME slideshow tutorial for us with pictures! Its on how to make a matchbook notebook, which would be awesome for marketing your shop.
All you would have to do is use a sticky address label to affix your shops important info to the front cover, or if your really skilled in Microsoft Word or any of the photo editor programs you could print a sheet of coverstock with your shops name, info and colors! Talk about making an appearance! You can get a package of coverstock for about 12 bucks at staples, enough to make a bazillion of these notebooks, this would be an awesome way to market your etsy or artfire shop.
I find handing out business cards is nice but if you hand out something USEFUL like a notebook people are more likely to check out your shop cause they will be USING your "Business card". I keep all the magnet business cards I get on my fridge and those are a great idea too.