Alice is not opening a closet per se, but some form of Hammerspace
Zig Zagged: Alice opens the closet, sees the junk about to fall on her, and closes the door. Then the door suddenly starts bulging, so she barricades it. When it looks like the danger has passed, a dozen or so items being pushed by a snowplow come out. Apparently, the closet wasn't really all that stuffed aside from the snowplow that was trying to get out.