David's "chickpea-tivity"
Here's a brief description of the contestant's attempt. Someone's probably working writing up more detail!
David made a "chickpea-tivity" by getting members of the production crew to follow him, holding a star, to a shop, where he bought a tin of chickpeas, opened it outside, then dropped the original chick pea on the floor, reuniting it with its "parents".
(Written by Taskmaster Wiki contributors)