-THRIFTING-
Sustainable and cheap!
If you change your look too often to afford slow fashion and sewing isn't for you, thrifting is the way to go! In addition to being cheaper than buying new clothing, it keeps clothes out of the landfill, which should always be a goal.
Try to avoid Salvation Army and Goodwill if you can, since they have some questionable ethics. However, if they're all your town has, it's better to shop there than buy new clothes. Some other options are Crossroads Trading and Buffalo Exchange, but it's best to support local small businesses whenever you can!