A quick and relatively non-eyesore way to create a closet:
Get a piece of 3/4" plywood 24" wide by however long you want your closet to be.
Buy a length of closet pole 1" shorter than the above length.
Get a few chunks of sturdy chain, around 4" long (all the same length) plus two nice hefty screw in hooks per chain piece.
Draw a line down the center of the board, the long way. Screw in one of the hooks near each end of the board, plus evenly spaced ones along the line so that the hooks are no more than 3’ apart. (For example, a 3 foot closet only needs the two end hooks, a closet between 3’ and 6’ needs 3 hooks, and so forth.)
Screw the other hooks into the closet pole in matching pattern.
Attach plywood securely to the ceiling, as in long screws into beams. Hang the closet pole by sliding links of the chain onto the pairs of screw eyes.
Now to enclose the closet to hide the clutter: Obviously you only need to cover the exposed sides. Meaning if you tucked your closet into a corner, just one side and the front. In the center of a wall, both sides and the front. In the center of the room (WHY???) all four sides.
So things hang straight and free, and to allow access, use separate panels of cloth. One for each side that is exposed, two for the front.
In each case the height of the panel is the measurement from the ceiling to just shy of the floor plus 1/2" to turn under at the top and 2" to use for a bottom hem. The width of the side panel is the width of the closet plus 2". The width of each of the front panels is one-half of the length of your closet plus 6"
(About material: use whatever you like, of course, but as a practical note, flat sheets bought from a discount home furnishings type store will be way cheaper than material bought off the bolt at a fabric store. Uh – it should be opaque, yes?)
Preparing panels: Turn under 1" on each of the long sides (the sides that run from ceiling to floor) and stitch. Fold up the 2" hem and stitch close to the raw edge. Turn under 1/2" at the ceiling edge – you can stitch this end down, or simple iron it well.
Hang panels: Do the side panel(s) first. Use a staple gun to staple through the folded down 1/2 inch into the side edge of the closet board. (The panel should match the board in width.)
Front panel 1: Start stapling this one 2" back from the front on one side, then continue around the corner and along the front until the panel is completely attached. Front panel 2: Start stapling 2" back from the front on the other side, then continue around the corner and along the front. This second panel should overlap the edge of the first one by about four inches.
The overlaps at side corners and front should ensure that your closet’s contents are not exposed by any gaps.
Possible needed tweak: if your material is very light weight and/or it’s a breezy room, your closet panels could blow around and look messy. The solution is to weight the hems. Go back to the hardware store and buy lengths of chain to match the various hem lengths. Slide a length of chain inside each hem and tack it to the cloth in a couple of places.
I see this description is quite long. It actually takes very little time to do. Once we were home from the hardware store, we had the closet finished and in use in less than two hours.