I was also working on a sign that says Welcome to Hogwarts. I have a sign that is made out of metal in my classroom
and I asked Hannah if she was able to create plans for a LEGO version. She came up with a really interesting design but the finished product may have over 2,000 pieces. At an upper limit ten cents per part rate, that makes a $15 sign into a $200 sign. LUG supplies or LUGbulk could significantly reduce the cost. Regardless, here is the latest version of the design.