It usually takes me a couple of weekends to complete my shopping plus the wait for Internet orders to come in, but once everything is in Good House Keeping recommends setting up a wrapping stations and wrapping everything at once. I like this idea, once it's all done I can officially cross it off the list - just make sure you don't leave this until Dec. 24th.
Set the table. No need to be elaborate. By putting out just a tablecloth and a centerpiece, you'll create the idea that it's ready for a meal -- not the contents of your child's backpack.
Take out additional leaves: A smaller surface means less space for things to pile up.
Keep a basket in the corner of the room for stashing stuff until you can sort it.
I try to make a couple of pie crusts and different types of cookie dough in large batches and then freeze the dough for later on. This is great for the latest minute Christmas Party, a quick gift for a neighbor, teacher, etc and the cookie exchange. In a real pinch, you can go with the Pillsbury ready made crusts or the cookie mix - both will look like your own once you are done.