Yesterday, when I was shopping at Office Max I found quick solution: Rubber band
There are bigger sizes Stretchable Bands I used to put around some furniture.
Here is my solution
Eaton loves that idea too. He stretches rubber band and puts books back in a place. You can put some fabric around it to make it look nicer!
I'm just happy I found a solution. It certainly does it's job and Eaton enjoys that too.
Have a great weekend!