Idea 1:
The first idea is taking a cliche picture of a flower or something and incorporating text in it like a calender. It actually doesn't have to be cliche is can be something very abstract and interesting.
Idea 2:
The second idea would be actually shooting text, for example text on billboards, walls, signs etc. it could be anything with text like the signs that say no entry signs to a graffiti wall.
Idea 3:
The third idea would be to create a poster. Taking pictures or a theater act or a dance performance and editing it in a way that looks like a poster.