A Welsh charity is looking for 2,000 children, parents, aunts, uncles, and teachers to help them beat a world record – and raise vital funds. Hybu, based at the Motorpoint Arena, Cardiff, aims to break the world record for the largest of people in the same place dressed as characters from an illustrated children’s storybook. It will stage the attempt at the Motorpoint Arena  Cardiff on July 7. There will be themed storybook rooms, fun games for youngsters, and the…