Get a Shipping Subscription
Subscribe to Amazon Prime, Shop Runner or other businesses that provide free shipping. Many of these companies offer a 30-day risk free trial period - which is perfect for the holidays. Purchase your holiday items during this period and you don't have to spend anything. Also, research how much the subscription fee is and compare that with the costs you spend on average yearly. Amazon also offers a discounted membership rate to students and they have programs like Amazon Mom that also help to simplify purchases and shipping concerns.