His daughters, Charlotte and Emma, were playing with Legos, those simple, stackable plastic bricks from Denmark that have spawned a vast empire of construction sets, video games and amusement parks. "I went through a Lego phase as a kid," he said. By the time I was 11 or 12, I'd moved on. ". This time, he felt no compulsion to make anything specific. Sanders, whose affable nature and shaved head scream "young at heart," was watching and fiddling with a few blocks of his own. He stacked a few pieces into a long, thin column, three bricks high and several Here's how to build a house. Here's how to build a robot. Jeff Sanders never lost his.