For last minute shopping for delivery before Christmas, Amazon has many consumer electronics items eligible for Free Two-day Shipping.  Simply select 2-day shipping like this screenshot.  An automatic discount will be applied as similar to this.  Items eligible for free 2-day shipping are listed here with categories and some examples listed.  Amazon states that orders placed by 8pm PST on 12/22 using two-day shipping will be delivered before Christmas.

Originally posted earlier, this is just a friendly reminder.