Voronoi Cell 

This tutorial was difficult to follow with all of the new components with weird names but I liked seeing the ways I could manipulate a shape confined within a simple box.

Sphere Voronoi

It wasn't too bad for me to follow all the steps but I'm surprised how many steps/components were needed to achieve voronoi compared with just a cube. I also was unable to apply a shader to my design for some reason so I'll probably check with you about that.