Thank you for all the lovely comments and blog-birthday wishes.
To choose a winner, I allocated a number to each comment in chronological order and used random.org. (Don't forget to also check all the DT blogs and the main challenge blog, if you also left comments there.)
The winner of my prize is :
Congratulations. Please contact me with your postal address. (My email is on the left hand sidebar, scroll down to 'About Me' and view my complete profile).