What is one way engineers have used a material like oobleck to help people?

Oobleck has been used to manufacture shoes, filling of portholes, making bullet proof vest.

Explanation:

Oobleck is a non Newtonian fluid which is made from mixture of cornstarch and water. It has both liquid and solid properties. Its act like a liquid when is poured and as a solid when a force act on it. It is a substance that is use in manufacturing shoes. The inside layer of shoes is made of it. It's viscosity increases when there is shear stress. It is use for filling portholes

personal, she chose to do it.