Hi there.
Just some fun with the cloudy plastic material and testing different render passes. Love that you easily can enhance the GI and caustics.
Rendered out at 1000 samples. Seems like the caustics could use some more though.
Attached are the raw rendering, rendering with passes added, final post and a list of the used passes.
Model is from the public Onshape library, slightly modified.
I can still see some noise in the material.
You may want to lower the saturation of the Transmission color. The noise resolves quite a bit faster with lower saturation colors (applies to both Transmission and Cloudiness).
Dries