Ok,

This is probably wrong but it is how I do paper wallets or cold offline wallets;
1. buy an extra android phone
2. install electrum
3. transfer coins to electrum wallet
4. email the encrypted private keys to myself after writing the password to decrypt down on paper
5. print out on paper the qr codes and letter/number sequence for private codes
6. put this piece of paper in safe place.
7. turn off and pull battery of phone.