I didn't do this today, but a few years back. It is something that is easily overlooked, but it pays good dividends.

A few years back I retired from work after 35+ years. Same year my daughter graduated from medical school. We are both paper junkies and bookworms. So we both have accumulated big piles of papers. So instead of throwing them, I collected them all in A4 paper boxes. The backs of these papers are being used for my planning , grandkid home-schooling, and countless other uses ( like using them as a mat when gluing something ) ...

In an SHTF situation, they can serve additional uses like tinder for fire starting ..etc.