Make separate physical wallets and separate the coins among them
Make backup of them just in case
And put them where no one would ever think such thing would be found, like among old books or among useless paper
When I read that I think I found a possible GENIUS idea: print the physical wallets half their scales and glue them to a page of a random book from your bookshelf. Remember the books' color and make sure there is no other book of that color in the bookshelf or just mark it so only you know that it's the "safe" one, and put it back in the shelf. Even if a thief comes and throws away all the books, the chances will be VERY small for that book to open exactly at the page they're glued!