I cannot tell a lie... my favorite type of project involves a little bit of cartooning. I think they can be quite helpful for explaining concepts, giving some life to presentations, or generally providing some fun to a design.
POST CARDS AND POSTERS
Fun events deserve fun invites!
BUSINESS CONCEPTS THROUGH CARTOONS
Introducing a new business environment or pushing a new theme within your company? People may react more positively if it's spun in a fun manner.
INK AND WASH CARTOONS
Various projects and cards
I've done a few of these over the years, and they always are a hit.