Last year I mentioned the Aussie organisation Canteen, which supports kids with cancer. As a fund raising exercise each year they have National Bandanna Day. Just about everyone buys a bandanna and wears it somehow. Another Doper stated that they worked/volunteered in a cancer unit and wondered whether I could grab them a bandanna or two.
Although it was only weeks after the day I couldn’t dig any up anywhere. However this years batch are on sale so I bought a few to send to the mystery Doper assuming I would find the thread in seconds. No such luck.