As with anything, there are some who go above and beyond, and, yes, there is something beyond triangle-tipped t.p. Check this out! (It's in Japanese, but the photos are all that matters!)
Instructions are included, but unless you read Japanese, you'll need to be a strong visual learner. I don't believe any of our origami books have instructions for folding ends of toilet paper, but they have plenty of other fun folding projects. Here are just two titles: Origami Greeting Cards by Isamu Asahi [736.982 ASA] and Origami Boxes and More! by Florence Temko [736.982 TEM].