If it has been used on just one side, don’t toss your printer paper! Approximately 24 trees are needed in order to make just one ton of standard office paper. When you put it that way, you might have second thoughts about throwing that printer paper.
Just flip used pages to reuse them. While it’s true that some printers don’t function that well when we put recycled paper, this is mostly the case with old ones. If yours is perfectly fine, you can easily use the blank side of a printed paper for reminders or shopping lists.
Nature will thank you, so will your pocket!