"Building a LEGO model or contraption by following the directions in the box is one thing, but it takes ingenuity and, yes, engineering ability to create an original LEGO composition. And there is no shortage of tinkerers determined to push the LEGO-mod envelope. The biggest drawback of the medium, according to LEGO artist Henry Lim, is also one of its most redeeming qualities. "If [the object] gets knocked over, it falls apart," he says. "However, it is made of LEGO, so it can be rebuilt.""