"There are snowflakes from around the world there. There are many snowflakes, and they are beautiful," Robinson said.
So many, in fact, that organizers have asked that no more be submitted.
"At this time, we have enough beautiful snowflakes to blanket the community of Newtown," the Connecticut PTSA said in a message to prospective decoration contributors.
Meanwhile, no new details have emerged in recent days to explain why the 20-year-old Lanza, armed with a semi-automatic assault rifle, two other firearms and hundreds of rounds of ammunition, targeted the grade schoolers and their teachers.
Described by family friends as having Asperger's syndrome, a form of autism, Lanza shot and killed his mother, Nancy Lanza, at their home about five miles from the school before driving to Sandy Hook and embarking on the massacre, police said. He then took his own life as police were arriving at the school, which had an enrollment of 456 students ages 5 to 10 before the attack.
Police have offered no firm motive for the attack, and state police investigators have said it could be months before they are in a position to offer a report on it.