An expandable accordion envelope, divided into pockets inside. The AD department fills the pockets with important paperwork at the end of the day: production report, exhibit G, camera reports, sound reports, start paperwork, script report, catering report, time cards, time sheets, etc.

This gets sent back to the office at the end of the day. It usually falls on the morning PA to sort through the paperwork, and distribute it to accounting, the coordinator, and whoever else wants copies.