LOL indeed we're all pretty bad with privacy and doxxing the fact that we have bitcoin, all you have now is coinmixing and denyablity 

TheBTCManual

I think I speak for many of us when I say "I could really use work on not talking about it." 

;-)

Spartan

bitcoin

Which cold wallet is the best for hold BTC? 

thedevil4k

I would recommend a cold card or Jade wallet, that's what I use, I prefer to use hardware wallets that are bitcoin only, but you can also create offline keys without a hardware wallet so it's not really a need, it just helps you to sign those keys

You can put it on a metal plate I do recommend that but there is no "Safest method" but shutting up, never speaking about it and hiding your keys lol 