That's neat, thanks for sharing.
I'm not sure how useful it is compared to normal paper wallets, but it is definitely a cool way to store your coins.
Most physical cryptocoin wallets that you can buy are purely novelty items anyways, so I won't fault you in those regards!
Thanks a lot! Yeah it's definitely a novelty item, if I had 1000 BTC and had to stick a backup paper wallet in the bank, this is the way I'd do it. I'll probably reduce it to 1 transparent sheet with the entire QR code and private key on it.