I think the bigger issue is if you get robbed and the piece of furniture is stolen by a thief

Who steals furniture nowadays? It's big and heavy.

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who doesn't realize it has important info hidden in it.

That would be the best-case scenario, it gives you time to use one of your other backups to move your funds.

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Or worse: "Honey! Surprise! For your birthday, I got you a new (thing you had washers screwed into)! I donated the old one to Goodwill." Ruh roh.

Your Honey should know about your storage system