게끔

So that, in such a way

Sets up a deliberate result: an environment where I could always listen to it, piled high so it doesn't fall over, making others look up to them, masking the taste of the vegetables as much as possible. Plain 게 does the same job, and 게끔 is the emphatic version — it stresses that the arrangement was made on purpose. It is slightly more formal than 게 and shows up in explaining and instructing.