NO THUMBS CHALLENGE (ft. React Cast) | Challenge Chalice is the second episode of the REACT series Challenge Chalice. In this episode, Tom and two reactors engage in the no-thumbs challenge, where people attempt certain activities while wearing thumb straps. In this episode the contestants try to open a water bottle and drink from it, unwrap candy and eat it, and sign their initials into shapes on paper and then cut the shapes out.