[LunaTheHamster1]

well, it's a plastic, so it could be debatable, are you trying to make things for them to play with or chew on? I would be looking at how brittle is the plastic, easily chewable, what is the colouring in the plastic, is that toxic? If you did want to try it, I wouldn't be leaving them in the cage, but maybe for free roaming if it is things for them to climb over etc.