Different Wall decoration

Still part of the series for my atelier inspiration, lets talk about walls. Would you paint your work place a strong colour? Would you hang things on the wall? Combine colour and decoration on the walls?
My space is quite narrow and I am afraid if I paint it I may drown my space in too much visual interference. I aim for it to be a comfortable and restful work environment. But I still want something more different than a collage of pictures and a bulletin board.

Here are a few ideas for the walls:

(Personally I really want to try the last one, It would be great for the wall in my atelier where I cannot make holes due to the electric cables that run through that wall...time to get creative with double sided tape!)

Hang some Cool tea towels as a substitution for a traditional framed print-painting

              

             The Tri-angles by Papier Tigre, a less traditional pen and paper clip holder transformed wall art.

Clipboards instead of picture frames by homes.ninemsn

A modern take on the traditional corck board as seen on weekend.knack