squirrel away
verb
- store up, as a squirrel does nuts for the winter
Wiktionary
verb
Etymology: Suggesting the way that squirrels hide nuts in a cache.
- To stash or hide; to hoard, collect, save, or accumulate; to create a reserve, stash, or hoard of some supply.
“He had bits of string, cans of nails and lots of other useful tidbits squirreled away throughout his garage.”