I've been blown away by having 3D transforms in a web workflow, and my 3D software has recently added glTF export as an option... it recently clicked that I could be potentially building interactions with real 3D objects, in addition to 2D divs.

Facebook is also adding a feature for this, so I imagine the publicly available library or glTF files will blow up in the near future, making this accessible even to people that don't work directly with 3D models.