I memorized my seed, and am not concerned about anybody finding my physical paper backups. I bought one of those titanium plate kits to punch my seed into years ago, but then started to question if I really wanted a nearly indestructible copy of it lying around (say my place burns down and even my “fireproof” safe succumbs - the titanium plates may survive to be found by anyone), even if I used a cipher. I also have seven ledgers - two scattered around my house, one always stays on my person whenever I leave home, the rest are hidden around the country (with family, bank, secret) - I figure the chance of my place burning down and all seven ledgers failing at the same time is astronomically low. Also, keep a watch list of your important addresses on Etherscan so you get an email alert whenever there is any movement, so you can immediately take action if anything goes on you didn’t initiate.