When to put up the decorations?

It has always felt right to have the tree and everything up before December 1st. I say this because December 1st is when we start the count down to Christmas with the advent calendar. It doesn't seem right to start counting down to Christmas is we don't have the tree or anything up. I don't think that we are feeling the holiday season yet, which tempts me to wait, but also tempts me to put them up. Maybe a little bit of lights, and a sparkling tree will put everyone in the holiday spirit. Then again, maybe it will be just one more thing to keep the baby from touching.