Modern House TIPS?

So in the picture it's a white interior (common modern House interior) and I'm just wondering if anyone has some tips to make the back wall look less naked/white. There is a lot of blank space on the wall and I just am a wee bit stumped. Cheers all!

So in the picture it's a white interior (common modern House interior) and I'm just wondering if anyone has some tips to make the back wall look less naked/white. There is a lot of blank space on the wall and I just am a wee bit stumped. Cheers all!