These are all pretty cool. I love that realistic eyes were created with only very simple elements. It really shows the amount of character that goes into eyes by looking at each one.
Drawing eyes - anatomy and perspective by greyfin on DeviantArt
Summer 2011 Sketches 7 - hands and heads — Minimally Minimal
Sélection de modèles de main - Dessin.land
How To Easily Draw The Perfect Pair Of Legs - by @krikri_ume on Twitter