Help me decorate my classroom! :)

Right now the walls are kind of boring and sparse. There are a few posters about phonemes and promotion for the classes, but not much else.

So what do you think I should put up, that's fun, interesting and unique? I didn't get a chance to pick up any Canadian flags or Canucks banners or whatever, but feel free to mail me something cool that you think I should stick on the walls of my class. Of course bear in mind that I get students of all ages.... :)

Thanks in advance--I'll think of you all when I look up at my walls each day!