I am manufacturing a plastic cube out of six flat, hard pieces plastic, of the same consistency as water bottle plastic. The top and bottom sides of the cube will be connected to the middle 4 panels by condom rubber. I need some kind of bendable plastic that can expand so that the cube can grow larger, and my only idea thus far is condoms. Does anyone either know of an adhesive that binds condoms to hard rubber, or know of a better solution to my problem than condoms? Any help is appreciated.