Stow away, big-time

HOARD

Think of a squirrel’s winter habit but on a much grander human scale.

"Stow away" hints at storing or hiding things, while "big-time" suggests doing it on a large scale. The answer plays on the idea of hoarding—collecting or keeping more than you need—where "hoard" fits as both a verb (to stash away) and a noun (a hidden stockpile). The clue cleverly combines the literal act of storing with an exaggerated tone to point to the word.