Student-built devices ranging from innovative new products to adaptive technology for people with disabilities will be among more than 60 student inventions showcased at the University of Colorado Boulder’s Engineering Design Expo on Saturday, April 28. The event, which is free and open to the public, will be held from noon to 3 p.m. at the Integrated Teaching and Learning Laboratory on Regent Drive south of Colorado Avenue. Projects will be exhibited both indoors and outdoors on the Herbst Plaza.