This is really a world case scenario, kaya need talaga paghandaan ang ganyang incidents, that's why i keep my seed online but it's separated through different accounts and platforms. Kahit sabihin na hindi recommended which is true naman, pero what i usually did is not putting it on same accounts, some words are missing and order is known by just me so kahit you have those words na without the proper order di mo ma access wallets ko.
Magandang idea 'din 'yan. The only problem with that is if by any chance ikaw mismo ang makalimot or when you die, your next of kin will have a hard time accessing your crypto funds (assuming you plan on giving those crypto sa mga anak mo or wife, and assuming you have those, you know, married.

)
Isa din na naisip ko would be to utilize SDBs (Safety Deposit Boxes) ng mga bangko wherein you can put any important documents on it. For a 24-word seed phrase, pupwede mo ilagay ang 12 words sa SDB ng isang bangko then the rest, sa isa pang SDB ng ibang bangko. May mga local banks tayo dito that offer such services like UnionBank, Metrobank, Lanbank, etc.