In fact, I might not have noticed any of them except that something else had caught my attention on that page in a local newspaper.
Promoting my "2012 Toronto Caroling Outdoors" Article
One Wintry Triple Writing Tip
First, keep your eyes and mind open to writing possibilities. I only noticed the first event because an e-mail address that I needed was on the same page, attached to some completely different item. Then I scanned the other notices, and found the first Christmas caroling event.
Second, think about what makes a topic unique or special. In this case, "outdoors" was the magic word. Personally I find myself singing carols indoors. Going outside would be different for me; and I tried to make it interesting for others too.
Third, look for patterns. After finding the first, I quickly noticed the second. In fact, my title and promotional blurb used words like "two", "double" and "twin. After a more careful review of the upcoming events, I realized that there was a third outdoor carol singing event.
That's my triple writing tip for this wintry night: be alert for new or simply intereting topics; then seek out the novelty of one unique topic or an interesting common thread among multiple examples of a topic idea.