House Update...Basement Progress

Since arriving home from Nantucket almost a month ago, I've been working hard on house organization and continuing the decorating process.  One area that I've been struggling with is the finished basement.  I knew that I did not want it to be a dumping ground for toys and old furniture, but yet we weren't looking to invest money in the space so I had to work with what we had.

We ended up dividing the large room into three spaces...an entertainment space where the kids can play with the Wii or watch TV.

 A workout area...

and a workspace for the kids.

It's definitely still a work in progress.  I'm debating on creating a gallery wall, but I don't want the space to become too cluttered!  Any advice?