I'm fascinated by "the way they used to do things." What do you call that? I don't think it's nostalgia, although it could be touched with it. I enjoy the challenge of doing things the hard way, somewhat similar to some preppers. Whatever it is, it's fun.
Food is one area where doing it the old way can save a ton of money. For instance, a recipe I found for "mock oysters" came about during the Depression and uses grated corn for the main ingredient. Where I live, that's a lot cheaper than oysters and probably healthier, too!
Other ways to cut food costs "the way they used to" is to make sourdough starter (then use it!), eat bean and pea leaves, sweet potato vines (after you eat the potatoes!) dandelions and other wild food and make drinks from grains, roots and leaves.
Although it can take some research, it's a fun way to pare down your grocery bill and enjoy some foods and drinks you may have never thought about.
How to Make Sourdough Starter
Making Homemade Yogurt
Pudding Pointers (Make your own pudding)
Whole Grain Meals in Minutes for Pennies