We have a big tub of Duplo that gets played with everyday. On Christmas Eve Big L and A were entertaining the boys with the Duplo, building cars and houses. I challenged them to construct a Christmas tree, and then left them to it. After a while A came and found me to show me what they had built.
One large Christmas tree complete with star on the top, a couple of presents and a Santa, all made from Duplo! Merry Christmas!