The Eva K. Bowlby Public Library will hold a LEGO Build-a-Bag Challenge at 10 a.m. and 3 p.m. on Saturday, July 18. Learn More Builders of all ages will be able to put their imagination to the test using a surprise bag of random LEGO pieces. Participants can work individually or team up with friends and family to create anything they can dream up before time runs out, from towering castles to wild inventions. Participants will be able to keep both their creations and the bag of LEGOs they use. The event combines teamwork, creativity, and hands-on excitement for LEGO fans of all skill levels. Pre-registration is encouraged by calling 724-627-9776, but walk-ins are also welcome.