What To Do With Business Cards...

What do you do with all those artisan business cards or any group of business cards? I have had them all over my house when packages land with supplies for jewelry making. Finally I put them to good use by putting a hole in one corner with a hole punch and using a large ring that hooks back on itself. I actually used a shower curtain ring as I had an extra one in my business drawer not being used. I put them in alphabetical order under their name and their shop name if it is different. I have this ring of cards sitting on my computer table so that I can easily look the shop up when I have forgotten the name!!!