If you spend any time on Pinterest (or on the internet in general), then you know that life hacks abound.

And some of them? Well, they’re a little less than useful. But would you believe me if I said that the most useful hacks of all are nothing new? Thanks to the New York Public Library, we now know that our grandparents were way ahead of us in the making-life-easier department. If you really want to impress your family and friends, be sure to check these vintage tips out.