I store tax papers by the year. Handy to refer to at any time. Throw in Medical receipts and tax deductible items for the current year with index tabs labeled January-December and store in these expandable jackets. Also use to store tape stapler paper clips post it notes tablet when on the go. Sort of like a mobile desk in a jacket. Also important receipts warranties small or large purchase receipts that need to be safeguarded in case issues arise from products. These brown jackets are sturdy and economical vs the colored jackets
These Staples brand "redwelds" (as I call them) match the quality of the competition but are bargain priced at about $1.25 per item. Nice inventory addition for my law practice.