Meet Blocks by Google: an interactive solution that lets you create 3D models in virtual reality environments using simple tools. It is available for Oculus Rift and HTC Vive platforms. You can use 6 tools to create simple to complex models. Users will be able to paint, grab, and erase models easily.
Once you are done, you can export your model or share it with others via link. The above video shows what you can do with this.[more info]