Here's a fun one. A cube. Made of 8 cubes in 2x2x2 arrangement. Which is in turn made of a bunch of smaller cubes, which are made from a 4x4x4 arrangement of buckyballs!
Not as intricate as some of my other stuff, but still cool to look at.
Interesting side note, with the sets I acquired in order to finish this little shape, I officially surpassed 40 sets! That's 8,640 balls! Yay!
...I swear, I don't need an intervention.