Container as content

In my understanding of the statement " Container as content", I would interpret it as using the container itself to deliver the message to audience. Instead of letting the wall to be empty, it can be decorated or be transformed into something interesting with message for audience to read or see o even explore on. A very simple example is sticking posters on the wall or simply a wall mural. Below are a few wall "containers" being used as a content.

Transformed a wall into unusual shape, with seats and also embedded with screens.

Placing baskets on the wall and also posters.

Posters placed all over the wall.

A huge wall mural painted by an artist.

By using a container as a content, it brought out a new and different view of the thing than it originally was.

*Photos are taken from Google image.*