I know this sounds like an obvious way to save money. It just seems like a good idea to take care of the things you buy. However, there are a lot of people who buy things and do little or nothing to maintain the things they buy.
For example, my father in law has a lawn mower that he has had for over 20 years. He still has his lawn mower, my husband said, because my father-in-law stores it out of the weather, mixes the gas with a special oil that helps it run properly, and he fixed any mechanical issues immediately. He also treated the mower gently, taught his kids how to properly operate the mower, and he moved rocks, sticks, and other things that could damage the mower from the yard while the mower was in use. Doing all these things has allowed my father-in-law to get service out his his mower beyond the expected life of that model.
My in-laws also have a vacuum and a carpet shampooer that have lasted decades. Generally, vacuums don’t make it to 5 years old in most of the households I know of, so that is a feat in itself. My mother-in-law also has books that have survived in good to excellent condition which she inherited from her mother. This is impressive because the books are almost 100 years old now and have survived many many moves.
Anyway, to make this brief, do what you can to take care of your things and you will be more likely to get your money back in service from the item. You will also save money because you don’t have to by a vacuum, for example, every five years.