Not your keys, not your coins. But are you storing those keys in a way that will last? I strongly recommend looking at Jameson Lopp's comprehensive reviews of these and more here.
 | Attenuo-
https://attenuo.com/ Centre-punched steel plates |
 | Billfodl-
https://privacypros.io/ Tile-based seed backup |
 | BitPLATES-
https://www.bitplates.com/ Single steel plates with various options |
 | Blockplate-
https://www.blockplate.com/ Centre-punched phrase on a single steel plate |
 | Cobo Tablet-
https://cobo.com/hardware-wallet/cobo-tablet Tile-based seed backup |
 | Codl Storage Solutions-
https://codl.co/ Centre-punched steel plates |
 | Coldbit-
https://coldbit.com/ Stamped steel seed phrase storage |
 | Cryptoetch-
https://cryptoetch.com/ Steel plate and etching kit |
 | Cryptosteel-
https://cryptosteel.com/ Steel capsule and tile based system |
 | Cryptotag-
https://cryptotag.io/ Titanium based seed storage |
All links provided in good faith.
Don’t trust, verify.