I generally have a sketchbook on me wherever I go. Sometimes I'm working out ideas for comics, sometimes I draw what I see around me, sometimes I just doodle. If I really have no idea what to draw I'll just start making up faces letting lines become chins or noses.
I have a lot of different faces lying around.
Which means that if I don't get around to drawing anything for the blog, or I don't have any ideas for the blog, I'll just post some faces.