Anyway, this is how I did it. (I'll use a 12 word seed as an example, but I actually did it with a 24 word seed phrase as well. It's a bit harder, but I used the same system I outline below, modified for 24 instead of 12 words).
12 word seed phrase is safe also. Why going for 24 words?
You may later forget the seed phrasenwhen you do not recite it again every morning.I can advise someone to memorize a 12 words seed phrase but not to fully rely on it but makes it the third or fourth backup. That means 2 or 3 backups must be
stored offline in different locations.