I love that Stampin' Up! now sells some individual stamps (see page 208 in the Idea book and catalogue). I used the Ribbon of Hope stamp and stamped it in Pretty in Pink as I am participating in the run for the cure on October 4th. However, you could stamp the ribbon in the colour that represents your cause.
I wanted to keep the card fairly simple. I stamped the ribbon in Pretty in Pink on Whisper White cardstock. I then layered it on Pretty in Pink and Basic Black cardstock and tied 1/4" Pretty in Pink grosgrain ribbon around it.
If you would like to support me on my run, please follow this link to make a donation. https://www.cibcrunforthecure.com/html/p.asp?t=3564013&l=1