I'm still not too sure if "Blue Fridays" are meant for just the month of November (Diabetes Awareness Month) or every Friday... I think its the latter after Googleing "Blue Fridays" and finding this Facebook Page.
A few months ago I came across a post by Lorraine at This is Caleb; she is gearing up for World Diabetes Day and featured Cari's shop on Etsy. I had been looking for something to wear to represent WDD, perhaps a lapel pin or something of the sort. Cari's shop has some cute stuff and I was able to find a basic bracelet that I liked and got the message across, while supporting JDRF at the same time as Cari put proceeds from these items to JDRF.