VFX Artist Dylan Browne has showcased a beautiful translucency shader he created for a 3D CD case using Unreal Engine, Houdini, and Substance 3D Painter.
It looks wonderfully realistic, and as one X/Twitter user noted, it doesn't resemble glass, which can be hard to accomplish. Browne says it's thanks to his work with the edges: "I use Substance Painter to scuff up the edges and make it less transparent there which catches more light and gives more of a plastic feel, along with a sprinkle of edge dust and scratches."