White walls

Now that the entertainment center has been satisfactorily assembled, we are looking for decorating ideas in the S-D-O household.

I think new O would like the place to be full of peacock feathers, but we've got to be realistic. Along those lines, we're not thinking of curtains for the time being, because the little guy has a penchant for attacking everything that moves, sways, steps or tilts.
We always don't want to go nuts, because a perk of having a simple home is being able to keep it pretty clean. The free space allows us to relax and melt away the stress of the work week. However, I'm always thinking of what to add, revise, or renew.

So what would you do with this white wall?