JoeJoe combines eggcups and a toilet roll
Here's a brief description of the contestant's attempt. Someone's probably working writing up more detail!
Joe initially tried to release the sand in a controlled manner to fill eggcups, but then completely removed the string blocking the hole, and had to frantically pour eggcups full of sand (for some reason wedged into a toilet roll) into the bucket. He managed to divert 56% of the sand.
(Written by Taskmaster Wiki contributors)