I have greatly enjoyed sucking the air out of plastic bags filled with all sorts of materials... This "jamming" effect has been used in all sorts of application

I have greatly enjoyed sucking the air out of plastic bags filled with all sorts of materials... This "jamming" effect has been used in all sorts of applications, and it's the second robotic application I've seen. This is great... I only wish I had thought of it first... in my experience I would try a less constrictive outer casing.. thin plastic produce bags work better than you would expect.