Besides jumping out of an airplane with them, what else can I do with two, outdated MC-4 Parachute Canopy units?

I am “blessed” with two MC-4 Ram Air Parachute Canopy units. They are outdated and have been demiled by cutting the cords about a foot or so from the edge of the canopy.
They are about 28 ft across and 13 ft wide and are made from low porosity nylon fabric.
Previously, I used them to cover an old flight simulator but thankfully that is gone now.

What should I do with the MC-4s? Please help me brainstorm.