Lines are one of the most basic elements of design. So, why not play around with them a bit? Thick or thin, straight or curvy, short or long - try something new! As my name suggests, squiggly lines come pretty naturally to me, so I used some corners for a change in the doodle above.  I created it with a regular ball point pen while waiting in the airport...proof you can draw with pretty much anything, anywhere, if you want to!