Take a look here.

Never mind you store Seed in a USB stick or write it down somewhere. You still need to hiding this. Storage online should be only one option and is NOT safe. Too much can happen. Hardware crash or the company you rent the online storage is suddenly bankrupt.

This website shows really some secret places I never think about.
Its not my site. I get it after a extensive search in google.

https://www.familyhandyman.com/smart-homeowner/the-ultimate-guide-for-secret-hiding-places-in-your-home/