Karen Owen has been making these great diffuser necklaces for essential oils/perfumes. The problem she found was that people didn't know what they were, so she printed up a description but it was unwieldy for attaching:
So we met to see if I could design something smaller. I suggested a front and back business card size with room to punch a hole in the corner. When looking at her contact info, it was an email address and phone number. I asked her if she'd considered a Facebook page so she'd have somewhere to upload photos of her creations. (So now there is!)
I asked if she had a logo and she showed me these business cards she'd had made:
So I looked for that font and a similar feather and voila!