Empow Studios is celebrating World Creativity and Innovation Day (April 21) — and a few days following — by offering a $100 discount on any of its STEM Summer Camps through April 30 if you use code INNOVATION. Empow’s award-winning camps include Minecraft, Roblox, Coding, and STEM Survey. Its risk-free registration policy offers refunds up until 14 days before camp begins. Empow now has locations in Newton Upper Falls and Newton Centre, as well as Natick, Lexington, Cambridge, Boston, and Milton.