Designer Libero Rutilo of DesignLibero, has created a unique way to give life back to used plastic water bottles. His idea was to create a 3D printed sculptural vase exterior, that can be placed over the top of a water bottle, and can be screwed on like a cap.
Are you also having problems with book pages? Here is a solution for you! I have 3D printed one, to make sure it does work... and it does :) Feel free to customize it here: https://www.vectary.com/u/meshtush/book-pages-holder