I bought felting supplies a while ago to try it out, but somehow managed to lose my felt within a week (I'm not the most organized person). It seems like it would be easy enough to learn but difficult to master like most crafts.
Etsy seller Famished sells amazing felted works of art that show just how much you can do when you actually master the craft. While most of the shop's creations are Star Wars inspired, there are other great geek felted creations like Totoro.
Via BoingBoing