Several years ago I ordered a Block Butler (on line).. It can be used for class and folded with block arrangement etc. however, I attached cafe curtain hooks to it, put a curtain rod on the folding closet door frame. Now I have a design wall that can be pulled to either side to access the closet doors. Works good for me. Sometime 16 inch or larger blocks do need to be pinned due to their weight. I do find that a design wall makes a big difference in fabric choices and placement of blocks.
Judy in Phx, AZ