The trouble with digital media is it goes bad. Encrypt the wallet and makes lots of copies.
A paper wallet (
https://en.bitcoin.it/wiki/Paper_wallet) is risky unless you have something secure like a safe deposit box pre-paid for 10 years at a secure bank (uh...).
Just to be clear - I was not thinking of a paper wallet as in made out of paper. I was thinking that he should engrave the code to metal or glass instead of having it on paper.
