[atoav]

The first question you should ask yourself when tasked to secury literally anything is the same: secure it against whom or what?

This article is about entropy and mostly an explaination why your mnemonic seed is already safe against wild guesses. The question then is how to secure it against attackers who might want to get it otherwise.

If you live alone writing it on a piece of paper and putting it into a locked drawer might literally be enough, since your main concern would probably be online aftacks. If you have 30 guests a week that calculation might change, but then your scenario is to protect against a guest who A) knows you have a lot of bitcoins, B) posseses all other required information to access the wallet and C) is invited or has broken into your flat. If the latter is an issue, maybe getting a decent door and a safe is a good idea.

This is just an example, but if you want to secure a thing, knowing which attack-vectors to secure it against is key.