MANCHESTER, England—Lego has always been a toy for children, but try telling that to its legion of adult fans. Grown-up builders, often rediscovering Lego after what aficionados refer to as the ...

ASML Holding NV, the Dutch maker of the world’s most advanced chipmaking machines, was selling “Lego” replicas of its most prized product to employees. When asked about the miniature models ...