Here is my short list of supplies...I went to Joann fabrics and got some camo netting, some army green bias tape and some plastic rings.
I cut the fabric into a large triangle shape. Then finished the edges with the bias tape, by sewing a straight edge with my sewing machine.. I then added a ring to each corner by attaching them with some bias tape. I did NOT measure anything. I did not use a pattern. I just threw it all together. It took me exactly 12 minutes from start to finish. Then I just hung each ring with a thumb tac in a corner of his room.
Now, It is not big enough for all 82 but certainly made a dent. I think I will make two more (for two other corners in his room). That should give him plenty enough room to fit in his bed. Thanks for looking.