The next thing to do to get your site ready for the holidays is to think of five or so good friends that you know well that aren't your current customers. Invite them individually to your house and give them an assignment on your site - you can't give them hints.
Ask them to pretend they are shopping for "x item". Point the browser to your front page and watch them as they navigate to buy the product. Just before they enter in their credit card information tell them that they just remembered that they need "y item" as well.
The more obscure the "x and y item" the better - ie it shouldn't be visible on your front page at all. Tomorrow we'll talk about some things that you could learn from this experiment.