Max was a very bad cat.
Then Tardmuffin's toilet tissue-less father had an idea.
So that we didn't have to hide all your toilet paper, we found that Max absolutely loathes touching anything wet or slimy. A small gladware lid with some water (so he couldnt get in prime position) and few wet ones wrapped and rubberbanded around the toilet paper (easy to remove) deterred him after the first few attempts. No matter how many times he'd bat it around, he'd get his paws pretty wet, and would stop quickly. We then moved down to just the rubber band, and now are safe to leave the bathroom door open