Everyone puts doughnuts on sticks
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
In the first round, Al, Dave and Paul all put one doughnut on their sticks, while Rob and Sara both put two on theirs. A rematch is therefore required, as there was no lowest unique number of doughnuts. In the second round, Al and Dave both decide to keep one doughnut on their sticks again, and Rob sticks with two, while Sara chooses three, and Paul chooses five (which Greg correctly guesses, before the reveal). Having lost the task, Paul gets annoyed and throws his doughnuts on the floor. With the lowest unique number of doughnuts on his stick, Rob wins the task.
(Written by JoGo and proofread by Karl Craven)