VR Project: 3D to 2D Inventory

This is my 3D to 2D Inventory. Essentially, it's the common MMORPG inventory, but in 3D space. The user can activate the window which will appear directly in front of them. Grabbing an object, placing it inside one of the windows, and releasing it will store the object in that space in the grid, which will then change color (and display an image) of the item inside. Reaching into one of the filled windows and using the grabbing action will place the object into the hand before it pulls out of the window.