Eating healthy. As long as you don’t need organic/grass fed, eggs, chicken, beef, etc, is all pretty cheap compared to a lot of things. Frozen pizzas can be $8+ often anymore, while chicken is $2-$3/lb.
I have a gap hoodie my mom bought me around a decade ago. It probably wasn’t “super cheap” but it’s my absolute favorite hoodie and has been since I got it. Still fits great and the quality of it is just top notch. Very dense fabric that has held up to tons of wear over the years.