How to do that when one is out of ideas...?!

blank state of mind...
Books... internets... magazines.. etc... already tried searching every print materials yet im stil couldn't think of anything..
I used to be able to think something out quite fast but for this final sem... it just seem so hard.. is it becuz lec is more strict seeing it's our final? or because i want my campaign to be perfect therefore my thinking became too complicated?
ARghhhhhhhh.. i already wasted several weeks in thinking and sketching yet none was approved...
Mr./Ms. Idea.. when will i meet you??