Once the paint is dry, Morrison uses her dry erase marker to add details to the snowmen's faces, usually a carrot nose and mouth and eyes made from coal.
Her designs are not limited to snowmen, however. One year Morrison was pressed for time and decorated the windows with wreaths and Christmas trees, which she says are easier to paint. She also likes candy canes.
Morrison is quite good at angels, too, but has to be selective where she uses them. Once, she painted an angel on a patient's window while the man was asleep. When he awoke, he was greeted by a large, white winged figure that appeared to be hovering in his room. This did not put him in the holiday spirit, so Morrison repainted his window with a Christmas tree.
For the most part, however, patients and their families enjoy Morrison's work.
"If they're here through Christmas, it's hard," she said. "They talk and ask questions. It takes the sting away from being in an ICU."
Sometimes, the ICU families make requests. One family asked Morrison for a snowman on a sled. Another family requested an angel and was moved to tears by the finished work. Another year, the ICU staff requested she paint a Christmas tree with ornaments featuring each worker's name.
Morrison said the ICU doctors and nurses also enjoy her work.
"Everyone on night shift was excited about me being here. They said 'She's back!' " she said.
Earlier this year, the cardiac ICU staff nominated Morrison for the hospital's "Heart and Soul" award. CAMC President Dave Ramsey presented her with the award at the hospital's February board meeting.
Ramsey told hospital board members how, during last Christmas's painting session, an ICU patient's granddaughters began watching as Morrison decorated the unit's windows.
Their grandfather had suffered a heart attack and the girls were struggling to understand what was happening, Ramsey said.
"While the nursing staff had taken extra time to answer questions and be supportive, Morrison found a way to let the girls feel like they were doing something for their grandpa," he said.
"When she got to his room, she asked them if they would like to help paint his window. Morrison spent time helping them design the scene and then allowed them to paint it.
"Everyone in the unit stopped to watch them decorate their grandpa's window and there were no dry eyes."