Its so easy and you'll be a hero. I started doing this this year and it's been beneficial already. Throughout the year, as you window shop and talk with your wife (or husband, or girl/boy friend, kids, etc), track what she likes in Evernote. For example, we were at a store, she picked up this cute little hand bag and said "I love this!", i pulled out my phone, acted like i was texting a friend and took a snap shot of it. Used Skitch to highlight exactly what item she wanted, saved to Evernote and tagged it Gift and Wife. Now that Christmas is here, I have a short list of items she loves! Go me!