On a related note, I have successfully hung a computer monitor. Needed items: four #M4 threaded screws (get the longest you can find, I had to settle for ones that were only about half an inch; 12 mm or so), four #M4 threaded wing nuts, four wire hangers. (Yes, clothes hangers will do it.) The monitor will need VESA screw holes. As long as the monitor isn’t a monster of enormous proportions, it should have #M4 threads, and it should be light enough to be supported by this relatively small hardware solution.
So, the trick is to screw the wing nuts onto the screws upside-down. They then become hooks. If you have a dremel, I recommend cutting off the “top” tips of the wings, creating an angle from the outer tip, pointing towards the threads, so that it is a shallow hook.
Screw the wing nut upside-down onto the threads of the screw. You only need to get it so that the wingnut won’t fall off. You don’t want to screw the wingnut all the way up to the head of the screw. We’ll get to that later. This two-piece construct will be our M4 “hook”.
Now put two hangers near the VESA screw holes on the back of the monitor, both “facing” the same way, so that the hanging hook is open in the same direction, so they can be hung together as if they were a single hook. Place the M4 hook between the two hangers directly over the screw hole, so that each hanger is “hooked” under one tip of the wingnut.
Now screw the M4 screw into the screwhole, holding the wingnut and two hangers securely in place. The first one should be difficult, but screwing in the second M4 hook should be easier, because with the first M4 hook holding them in place, the clothes hangers should stay put over the adjacent screwhole. Just get the second M4 hook into position and screw it down. Now the linked pair of hangers are securely in place at two points on the monitor. (If one VESA screwhole fails, there’s a backup!)
Once in place, you should have two hangers securely attached to the back of the monitor, ready to hang. This would be enough to suspend the monitor from your chosen hanging position. However, just to be secure, you will want to attach a second set of hangers to the other set of holes, in the same way. Once finished, you should have no less than four hangers, hooked to the back of your monitor. You should have them all facing the same way, and can easily hang them from the same hanging point.
Just make sure you have a strong, secure hanging point. Optionally, you can do like I did and hang the two pairs of hangers from two close hanging points. That way, if one hanging point does somehow fail, only one of the two pairs of hangers will fall slack, and the other pair will continue holding up the monitor. Remember: Safety first.
You may have to tie either the monitor itself or the hangers to a second or third hanging point, just to make sure it doesn’t swing around. This tie-down can afford to be much less secure than the hanging hardware, so you don’t have to be quite so secure with it. I had a long plastic film tube that held a folded cable while it was shipped to me. It made a simple, short rope to tie the monitor to a third point to keep it from swinging or otherwise pivoting.