Uses for two-sided used paper

I have tons of paper left over from my classes last semester consisting of lecture slides and course outlines. I have at least a binder full of this paper which I think would be really wasteful to throw out. I was able to pick out some papers that were blank on one side that I could use as scrap paper, but the majority of my paper had text fully covering both sides of the sheet. I tried looking online for things to do with used paper but could only find uses for scrap paper (one blank side) or garbage crafts for used paper.

Here's a list of things that I've compiled for my uses of this paper:

1. Table/floor covering for messy activities (painting nails, dyeing hair, art)

This would be a great in the place of a new paper towel when painting your nails or when you are short newspapers to line your floor.

2. Makeup

This could  be a substitute for the index cards that you use to do eyeliner or to apply mess free mascara

3. Travel/fragiles

I move a lot of items to and from my school city and my hometown. These papers are great to wrap fragile items such as dishware or decorative ceramics.

4. Origami

This might be considered a useless craft but sometimes I like the calming effect of folding paper.

5. Bookmarks

Quick alternative when you don't have one on hand.

Note: I tried to use these papers to clean (people suggest newspapers work for windows) but that did not work at all for me and it got really messy. The papers retain water to a certain extent but mostly fall into shreds when soaked.