You may check this paper wallet generator project that uses a thermal printer, it has a startup cost in time and money (getting a rasp pi, a thermal printer, setup time...) but then creating paper wallets will be safe (cold, offline), easy and fast (just type a command in the terminal and hit enter), see:  http://paperbank.it and let me know what you think about it or if you have suggestion on how to improve the project. Thanks.