Those running the street with tin-foil hats and cardboard signs reading "THE END IS NEAR", will find yet another coming apocalypse after why have weathered this one, maybe Y2030K, what ever. 

If you want to do it temporarily and without opening up the trunk line, then close the vents and tape cardboard on the inside of the vents.

I've been doing construction and rehab on houses long enough that I have seen the bifold closet doors go from solid wood frame and stiles and hollow core luan-type plywood panels to cardboard frames and stiles and paper overlays.

If a doctor is renting a borderline war zone house, I don't even want to know what a teacher/carpenter/postal working is renting (a cardboard box?)

A plumber came yesterday to fix the pipe and I didn't even get an update and the vents are covered in cardboard because when they came to clean the vents they never returned to put the little window things on the vents.

I only have $112k left of VA entitlement left, which might get me a cardboard box in DC.

Man has looked forward to this time and place in history for the last 6,000 years and you got able bodied healthy adults standing in the street corners with a cardboard sign and a cigarette in their mouths begging for cash .its sickening 

I need help opening a cardboard box.

Do you have a big piece of cardboard and a felt pen?

I want a woman who will live with me in a cardboard box on the side of a freeway ramp because she loves me or finds something fascinating about my jokes, personality or toothless smile.