I did the cushions thing, cuz I knit on my couch and had just used it a few days ago to check the same dpns for the first FI hat. I've looked in an array of books and patterns in the last few days so contemplated the 'bookmark' possibility, as well. To no avail. The last few days I've freecycled a number of items so sure hope no one received more than what they asked for (or I'd hope they'd have em'd to say as much).
My fear is that the small wastebasket I keep near my coffeetable might've been the recipient of the gauge if it inadvertently found its way off the end. (Checked there first....nada.)