Since sewing is off the table, have you tried a big ole safety pin pinned from the inside through all the walls? May work, may not...no harm in trying.

JT - James Taylor

Here in Rochester, NH (23 miles from York Harbor Maine). Plates and dishes rattling. But the truly unnerving thing is the sound of an earthquake. Your brain says "who is driving a megaton bulldozer down a residential street" only to quickly realize that it is Mother Earth groaning very loudly.

Mr. Schuster McBooster