How do I keep my copy paper and tape parachute of a size 31 inches in diameter by 19 inches in height with a 10 gram weight dangling inside from tipping over itself during a 2 meter drop?

Answer 1

You have to lower its center of mass or center of drag during the drop.

Either hang the weight more than 19 inches below the canopy, or else
fly a long cloth tail from the weight, like the tail on a kite.

Another couple of things I notice:

-- the weight of the load isn't any more, and probably less, than the weight of the parachute;
there's hardly any incentive for the parachute to inflate.

-- the 2-meter drop isn't much more than twice the diameter of the canopy; again, hardly any
opportunity for the canopy to inflate during the drop.