John had a habit of ________________ spare change in a jar, and it added up to a surprising amount over the years.
squirreling away
She always ______________ important documents in a secure and fireproof safe.
squirrels away
When it comes to saving money, I should really _______________ my frugal sister's ________ - she's great at budgeting and living within her means.
take a leaf out of sister's book
John realized that he needed to be more organized in his life, so he decided to________________ his friend's ______ and create a daily schedule.
take a leaf out of his friend's book