I have four kids...so Christmas, at the least, is entertaining.  As the kids get older (15,13,13 & 8) they are getting craftier at trying to "guess" what is wrapped under the tree.  While I'd like them NOT to do this, their curiousity gets the best of them and they like to touch, feel and guess out loud what is behind the paper.
This year, I decided I had to find a way around this.  So, instead of labeling gifts with their names...I labeled them with names I made up.  Zerkelschmidt, Farfenglitz, Dopplejinger and Narkelboom.  Each kid had no idea what their name was...and therefore, no idea which presents were theirs to guess at.  They were completely frustrated.  It was GREAT!
On Christmas morning, I announced their "names" and they were able to open their gifts without saying "I KNEW what was in there"!  It was more fun for them...and definitely more fun for me and my husband!!
Merry Christmas and Happy New Year!!!