You could think of "baling;" to "bale" hay is to gather or collect the hay into a bundle, or "bale." A caveat, though: in Gaeilge, "to bale" is a different verb, viz., "burláil," as in "tá sé ag burláil féir" (and "burla" is a noun for "bail," as in "burla tuí"). So, maybe that suggestion is a bad mnemonic after all.
Here's another one: "baleen" whales gather or collect their food using the "baleen" in their mouths. The baleen is a sort of comb filter, a sort of biological sieve: the whale gathers water into the mouth, then pushes the water back out, trapping (gathering, collecting) krill and other food in the baleen.