What is the best gift for your wife, husband, or girlfriend?

I was at a conference recently, and someone was trying to figure out what gift to give my girlfriend.As I was about to start my presentation, I got the email."Dear friend, I am sending you an Amazon gift card for $25," it said."I will also send you the first 4 copies of my book The Gift of a Lifetime."It said I could pick either a free Kindle book or an e-book book for my wife or girlfriend.The gi...