I haven't been able to verify this Krispy Kreme offer (by way of Buxr.com), but supposedly, through February 14, when you buy a dozen doughnuts, you'll get a dozen Valentine's Day cards free... and each card contains a coupon for a free single doughnut. So it's basically a BOGO, but it's valentines, too! See how that works?
Also, participating Krispy Kreme stores have heart-shaped doughnuts specially available for Valentine's Day, which your coworkers would probably enjoy more than that stale box of punctured, leaky chocolate-covered cherries. Just a thought.