There many were shortages by 1918. Paper had been in short supply for several years to such an extent that papers were reduced, not only in the number of pages, but also in reducing the size of the page. Around each Christmas, there were more pages, in order to increase the number of advertisements. Immediately after the Armistice, the papers quickly returned to their pre-war size.
Today, supermarkets are beginning to introduce places to return plastic bottles and received some sort of credit. We didn’t have plastic bottles, but small boys used to like to collect glass bottles and exchange them for cash.
Here is what they did during the Great War to encourage the recycling of paper.
Nothing is really new!
At least it is the planet we are thinking about today rather than weapons of war