I've done 100% of my Christmas shopping online for years. I worked in retail while in college, so I have had my fill of the mall at Christmas time. Evernote is a great tool for tracking purchases and receipts. Here is what I do:
- Create a Christmas notebook
- Forward all your receipts to your Evernote email address (found in Evernote's settings) and include @Christmas in the subject
- Forward all shipping notifications to the same place
This will allow you to effortlessly track how much you've spent and easily find tracking numbers. I usually keep this notebook around until the end of January and then it gets trashed.