Wall Space

I've been fawning over some of the wall decals from Blik for a while now, but can't seem to decide where to put them in my house. I know myself- no matter how tasteful, most accessories and accents run the risk of quickly becoming tiresome (or worse, aggravating) to me. I like things spare and soothing. So these will need to be chosen carefully, and placed thoughtfully. 
An easy solution might be to choose something a bit whimsical and use it in one of the kid's rooms. I'm always more willing to go outside of my comfort zone when it's in their space, but at the same time, I get kind of jealous that they benefit from all the 'creative' touches. Ah, a conundrum.