This is no joke.
My grandparents not only never had indoor plumbing, they never had toilet paper. When we went to the little house out back there were supplies of corn cobs and newspaper, and of course the Sears catalog.
So you have options.
We had an outhouse at home too, but my parents were at least civilized enough to buy real TP.
Helpful hint - the red ones are softer. I always went for the red ones.