Children's artwork - where to put it?

I've been talking a lot about Art lately. I can't help it, is one of my favorite subjects. I'm not an artist and I don't have any artistic talent, but I just like it.

As soon as my little ones were big enough to put their fingers in the paint I started buying all kind of art supplies for them. The problem is that my little Picassos are very productive, the "artworks" started piling up pretty soon. And I either don't have the courage to do a proper clean-up or if I decide to do one, then I can be sure that F will suddenly inquire about a specific drawing (read here: a single blue line on a purple paper). And watch out if we don't find it!

At some point, when I couldn't stand seeing all these loose papers dispersed around the house anymore, I decided to buy some boxes to organize the drawings. This has worked out well, but sometimes they like so much their pictures (or mommy thinks they are true masterpieces), they want to see them hanging on a wall (and daddy doesn't think they are really worth hanging in the living room). So here's the solution I found. We've installed a wire in our hallway (see pictures below), that came with two nice little planes to secure it on both ends, where we can hang some of the paintings or drawings. The good thing is that whenever we are tired of one of them or we need some space to put a new one, we can easily change them.