Here is a really quick and really simple birthday card idea that I found in a 2009 Paper Crafts magazine. The original card was created by Kimberly Crawford. I just love cards created with kraft paper.
Both butterfly punches are from Martha Stewart, and the patterned paper is from BasicGrey. I did not have the right colored string to match my kraft paper so I died my string using coffee grounds. I got the perfect color string and it smelled heavenly too. ;)