The final day of the eighth annual technology conference drew more than 800 people in policy, tech, business and media for panels, demos and fireside chats around technology’s impact on society.

YouTube / Unnecessary Inventions Parents, rejoice! A genius inventor has come up with a brilliant foot-saver, designed to deal with the most menacing of toys – the dreaded Lego.

Benedetto, who lives in Burlington, Vt., runs a YouTube channel called Unnecessary Inventions.

When you hear the word "invention," you usually think of something useful. Unless you're Matt Benedetto, the Burlington man famous online for creations that are completely unnecessary. Our Cat ...