During worldwide COVID-19 lockdowns, Lego creations have stacked up in homes with children. The company reported a 21% jump in sales, resulting from the immediate demand for in-home entertainment and the company’s pre-pandemic push to boost online sales globally. While its flagship product remains the classic brick, the 88-year-old family-owned company is evolving to recognize the diverse needs of young consumers with new offerings like Lego Braille Bricks and pandemic-inspired online content and hybrid learning resources. As families continue to hunker down, Lego love appears to be growing. “I have never gotten so many letters … [about] how important Lego play has been,” CEO Niels B. Christiansen tells TIME.