@morantis

Just noticed this thread. Here is what I would throw into the idea mill. I am sure someone has thought of this before, but I have never seen it written about.

They have these "CoinStar" machines everywhere where you can get rid of your piles of change, and convert them into gift cards for merchants, or coupons. It would be great to use this vast infrastructure to convert all this change into btc paper wallets.

I'm sure this would be already happening except for the regulatory issues involved.