I found the idea to make a scarf with writing on it on Pinterest, here. I found scarves in different colors to suit different friends, then wrote on them with black and gray fabric pens. I used different quotes, again to suit different friends.
Here, I wrote a Scripture passage with the gray pen, then wrote a key phrase over the top in black.
The most difficult part was holding the fabric taut so it didn't shift while writing on it. On the second scarf I used my ironing board as my writing surface, and the fabric of the ironing board cover was perfect for holding the fabric still!
I was somewhat disappointed in how it wound up looking all laid out, probably because I'm not that great at writing big, and the paint pens didn't seem terribly "paint-y." However, all bunched up, like you typically wear scarves, it looks really cool.