Cardboard paper - laser 3D could do it? A one-off would be most likely unfriendly in cost.
Just thinking ...could you approach some cnc shop that would be able to cut and shape a duplicate? I worked around factories for automotive and saw plenty of tool and die...so, can't help asking why not, but ...maybe there's a part in a unit, somewhere out there, just waiting to be adopted. Hoping for you.