Lars makes a stack
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Lars goes hunting specifically for a tube, and eventually finds what he wants, in the form of a long clear plastic cylinder. He stands this on its end, and balances multiple items on top of it, including items of furniture, and board games. Unfortunately, he neglects to notice that a table he includes near the top of the stack has a single central support which is much narrower than his tube. In the studio, Olli reveals that Lars' stack, measured from the narrowest point of that table, was just 92 centimetres. He therefore earns third place in the task.
(Written by Karl Craven)