We could build a substantial wall using our cases of doors if we had frames to hold them up.
If the LUG ever needed a big white LEGO made backdrop, doors would frames would be a fast and easy way to do it. For the record, do the doors fit frames that are 5 bricks tall or 6 bricks tall? I would wager that they are 6 bricks tall and that 1x4x6 white frames would cost at least 0.20 each. I would estimate that buying six 1×4 bricks, to cover the same surface area, would be three times as much.