Hide 12 words in a long text, online (blog, email letter, book, whatever). Example: in one of my btc guides on substack I put 12 words of a 1 BTC wallet. Good luck finding it after you read my guides.

Same seed is also backup in another forms (TailsOS USB stick, encrypted USB memory with encrypted password manager).

You can also use steganography to insert 12 words into a picture jpg. Example here:

I would just walk over the border with nothing.

Or with these :)