Congratulations to all of you!
This is my second holiday season on Etsy. I print off copies of the invoices, and stack them by date purchased. I try to make the same things ordered in groups. I deactivated some of my items that aren't already made up and take too much time to make. I am focusing on the most popular items. If it becomes too much to keep up with, I will put my shop on vacation mode until I catch up.
I was going to close my shop on the 10th so I can do my own christmas shopping and preparation. Then I decided to keep it open, but only keep active the items that I actually have completed and in stock. That way I only have to ship items instead of make them, and I might get rid of a few more pieces of inventory.
My shop has evolved during the past 2 years and the items offered in my shop have changed. Next year I will be focusing on the popular items, and through the year try to build up my stock so I will be prepared for next year's holiday season. Also, I will try to use up a lot of the fabrics that I already have on hand.
This is a great "problem" to have. Just remember, as was already mentioned, to take some breaks to rest your hands, neck, eyes, arms, etc. and to spend a little time with your family. Also think about when you are going to temporarily "close" your shop so you will have time for you own holiday celebratons.