I had nothing to lose when I submerged a broken raspberry cane into a bucket of water to see if the berries on it would ripen. Whether by storm or a critter passing through, the cane was broken clean through. I found it on the ground soon after its detachment; the leaves were still lush and it was just starting to form the creamy green-colored balls that normally would develop into red berries. What a bummer to lose so many, I thought. It was either off to the compost heap or to my weird idea of a bath.
I was pleasantly surprised that putting the cane in water worked! No, the cane's leaves aren't pristine, but the vase treatment apparently bought enough time for certain berries to ripen (about three days later). I say certain ones, because not all did -- mainly the larger ones. Better than nothing.
Have you had any last-ditch efforts that surprised you, too?