Those are just paper wallets. I was thinking more of fixed amounts with the amount on the front to simplify it for non techies.
Ideally you wouldn't be able to send coins to the address and only redeem the whole amount but there'd be no incentive to do anything else anyway.
The point is making them usable as cash.
People have done it basically a physical Bitcoin is a wallet with a fixed amount on it. and I know a few did it with paper to lower costs.