The Thought Bubbles design should allow any wag to tag the wall of his choice. Cuteness (or perhaps over-cuteness), as it inexorably must, is bound to follow.
For those with an Otl Aicher thing, the Modular Icon design should allow you to create infographics, pictograms, and a representation of pretty much any Olympic event on the bedroom wall.
The Punctuation Flowers are a bit more abstract, though will certainly jostle for attention with anything else in the room. Wall candy for an otherwise dowdy copy editor? Why the hell not?