I stumbled across this website earlier in the week. It may have existed for a while, but I had no idea. It's freaking AWESOME! It's called ThinkGeek, and it has an array of awesome and amazing things. If you're still looking for some last-minute gifts, I would check it out.
OR, if you want something else unique, what about signed copies of books from an indie author? I have several copies available, and I can take payments through Paypal. Contact me if you are interested in any of my books or contact your favorite author to see what they can do for you.
I hope you all have a fantastic weekend!