Anything that is cheap/reasonably priced, has a decent quality and doesn't follow some specific fashion trend or anything. Still, i only wear jeans with 6-8$ t-shirts and some shirts. I have only 5 types of jackets for various conditions, all bought 5-7 years ago. And i usually have 2 pairs of shoes: 18$ Veer sneakers that are comfortable, made out of leather and hold for about 3 to 5 years, it depends. I also have a 29$ relatively "good looking modern type" that is the more expensive one and i hold it for occasions.
I have no brands besides "Veer". I buy according to price, quality and looks. In that order. Usually from Takko Fashion, C&A or very rarely H&M (but i feel like a rich spoiled idiot when i want to shop from there). I enjoy the cheap t-shirt baskets in hypermarkets i change a t-shirt once every 3-5 years, when they go in the "house clothes" category.
whatever looks good, fits, and is within a reasonable price range lol.
NOW I will be honest and say, because I'm going to college this fall and haven't bought a new wardrobe since high school (that was 4 years ago) I splurged a bit and bought some nice clothes for myself from buckle.
In the summer i always wear AE, Hollister, A&F, and sometimes Aeropostale t-shirts. But when winter comes, i get the majority of my clothes from Rue 21, which is much more my style (one of the many reasons i love winter so much).