There are many ideas' out there to help with a design wall. Some will sit on a table others like those mentioned are made of styrofoam. The best I found was a toss up between 2. One made of PCV pipe the 1" size which could be made from table top to king size floor but the large floor size just didn't seem that it would work with most homes. The styrofoam one I liked is the one where you go to home depot and buy a special type of building styrofoam. The foam is 1" (which makes it easy for storing). But it has aluminum on one side. Buy one 8' sheet cut it in half. You can put inexpensive hindges on the one side so it folds to put away and opens to the other side that you can put whatever fabric(cotton, canvas) is your choice. There is a tut out there in the vass internet but I didn't save it, I think I found it on a blog. I don't know if this helped but this type of foam helps keep some of that foam that floats away is cut down
JJat2