Tobias stacks his buckets
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Tobias initially copies Linda's tactic of lying down so that even one bukcet is taller than he is, but then thinks better of it. He instead builds a stack up to his waist, then kneels down and declares his stack finished (holding the stack steady with his forehead). Eventually it collapses, and he leaves his spot to watch the rest of the contestants. He therefore earns no points.
(Written by Jenny R and proofread by Karl Craven)