I need an alternative to the traditional typewriter

I enjoy writing letters, but my hands have progressively hurt more and more from handwriting. For a time, I tried typing letters on my computer, the personal feeling of my letters diminished. Having printed it out, looking clean and mechanically perfect made my letters feel less valuable, they didn't feel like I spent time on them.

So, for the last few years, I've typed letters on two older typewriters and that has felt like a happy medium. I make mistakes and have to fix them, sometimes the text looks odd or the paper moves, I love it.

I have two questions I need help with:

1. Does anyone know of a mechanical typewriter that doesn't utilize the rolling pin to secure the paper? When I write on cards, they have to be bent and sometimes they never retain their former shape. I'd also like to get into journaling this way, but can't feed a whole journal through the rolling pin.

2. Can anyone think of other ways I could write letters, other than the methods I've listed already, that may bring a personal nature to my letters?

Thanks!