Cash stuffing is simple: you put physical cash into labeled envelopes, one category at a time, and watch the savings pile up where you can see it. This book turns that habit into three finishable challenges.

The main event is the classic 100-envelope challenge: 100 numbered boxes, $1 through $100, for a total of $5,050 when every box is colored in. Alongside it, a $1,000 challenge and a $500 challenge for smaller goals or shorter timelines. Every challenge has color-in tracker pages with running-total boxes, so you always know exactly where you stand, plus a goal-date field to keep the challenge honest.

The book opens with a plain-English getting-started guide: what cash stuffing is, what you need (envelopes and this book), and how a challenge round works. An envelope-setup worksheet helps you name your categories before the first dollar goes in. A weekly check-in page keeps you reviewing, two notes pages hold the overflow, and a certificate of completion marks the day the last box gets colored.

This is a structured way to save money. It is general information, not financial advice, and it promises nothing except a clear tracker and a finish line.