She mentioned how small, cheap purchases can have a surprisingly large impact on our well-being. #4 A good pillow, trust me it's a game changer. However, it's not all rosy when it comes to buying such cheap things. After all, constantly purchasing such cheap things, and hoarding them all, will surely not be a good thing, will it? #25 I guess this will depend on how bad your breath is but a good tongue scraper for less than $10.