Clean your apartment/house spic and span.
Plan and make an extensive list down to the details of what you’re bringing and what clothes you’re taking. Get them ready – wash, dry, iron, dry-clean, purchase some, whatever.
Make a list of everything you need to do before you go and do those things – pay bills, transfer funds, put a hold on the newspaper or mail.
Make sure your laptop/tablet is functioning properly and has whatever you may need loaded into it – books, photos, plenty of storage space, etc.
Make an itinerary to leave with a trusted friend or relative so someone will know where you are and how to get in touch.
Not only are these things productive, they’ll be part of the trip itself. A journey isn’t simply when you get there, it’s also about the excitement of getting there!