It's true that many, many fans draw David as a tribute to him but David has also drawn a few items for charity. If you saw him on Derren Brown's Trick or Treat you know that David might not be able to fall back on a career in art if he gives up acting! Here are a few examples of his very cute doodles however I am a bit concerned that one of the world's biggest Doctor Who fans thinks that the TARDIS has more squares on the right then the left!!!!
This the doodle of himself he drew for the Headway Essex charity.
This is the very sweet mug of tea he drew for the Willow Foundation's 2010 doodle sale.
And finally the lopsided TARDIS!
Whoever had this originally sold it through Paul Fraser collectibles.