I put it in hangouts, erroneously expecting that you'd see it. That said:

There's nothing suitable in the antechamber- it's largely empty except for a small pile that might once have been a chair or frame or something. Some of the benches and pews from the shrine might be suitable, but it's not ideal. Also, the door appears to open inward, so that's likely to be a problem.

(all of the doors have opened inward, actually, though it hasn't previously been relevant)