The boulder trap... a deliciously simple prop that has become the staple of any adventure game. I was recently inspired by Donkey Kong Return's implementation of boulders. Their take was to create the geometry in a way that preserved the hard cut look of stone by composing the orb from planar faces other than quads (in their case, using hexagons). I took a cue from that and tried making this guy from pentagons and triangles.
Rope is a complete pain in the butt to paint.
And in case anyone isn't yet bored of the classic 'steamer trunk'... I've started on another.