hay, bale, hay bales, bales, hay stack, haystack, haystacks, hay stacks
Mnemonic
A 芻 hay bale is just a 勹 container for hay. They are usually stacked up as high as a 山 mountain. And they are soft and bouncy too, so you can 丿 slide down them if you come across a 山 mountain of 芻 hay bales.