I made many of the assets inside of the Leap Motion V2 Unity Assets. They contain features like rigged hand movement, hand creation/deletion management, hand physics, scripts for grabbing objects, and several examples. Some notable apps that were built on these assets are Form and Function, Aboard the Lookinglass, Weightless, World of Comenius, and Soundscape VR.
The video below is a bunch of small demos I made using the V2 assets. Everything I worked on is open source and you can check out the projects at https://github.com/leapmotion-examples/