Attentive walkers in Walpole may have notice something recently: colorful, hand-painted rocks distributed throughout the town, emblazoned with uplifting messages. Their origin: Keep Walpole Beautiful. "So many of you helped us this winter to make kindness rocks to bring happiness and a little whimsy to our town," wrote Rebecca Joyce on the group's Facebook page. "We are slowly placing them in neighborhoods all over town so keep an eye peeled on your daily walks."