When I returned from holidays someone had left a large A3 style calendar on my desk. I thought ...'Great I can mark off relevant dates right here in front of me'. I then noticed that the calendar was for the year 2009, obviously what I thought was an act of generosity was actually someone cleaning out their trash and dumping it on my desk.
Being the ever resourceful fellow, I flipped it over and I use it as a sketch pad for when I'm waiting for my computer to finish whatever calculation it's doing at the time. The top sketch (Hulk or Frankenstein's monster) was sketched in blue biro. I then took it into Photoshop to ad the colour.