That is a cool idea and an idea that I have had as well only because I could paint a most difficult quilt that would be almost impossibe to make lol. I can think of one wall I could use. One of the hallway walls, those are the only bare walls left lol.....
another idea would be to apply a thin canvas to the wall like wall paper, just in case you did an excellent job and had to move and so you could take it with you lol