No password can be considered secure anymore, the best way to store secrets is not to store secrets all in the same place. What you can do is to break the secret phrase in few words and obfuscate them by using this website. The result will be a generated url, you can store or share this url where you want. When you need to recover the words, visit that url and you will need to remember only a pattern and a color to recover the seed phrase. The phrase is not stored anywhere but it is obfuscated within the generated url.