Thanks to all who replied giving me ideas for a Secret Santa present.
Smelly - the Prezzybox Surprise Mug is wonderful, I laughed out loud when I saw it. It would have been perfect but unfortunately they were sold out!
Kittycat - your idea of a self improvement book was fantastic. I looked on Amazon and, after trawling through a mind boggling list (went to bed quite late last night!), finally found "How to Develop a Winning Personality"!

It doesn't matter what's written inside the book as he'll never read it but just to see his face when he reads the title will be enough!!!
I felt a bit guilty after ordering it as it kind of makes me sink to his level but then again, I'm sure something lovely will be planned for me and they won't feel a bit guilty. I found a way of getting round the embarrassment of opening something in front of everyone a couple of years ago by saying "Oh no, I couldn't possibly open it now, it's a Christmas present and I only open them on Christmas Day"