I don't have a junk drawer. I have a bag where I put clothes I won't wear - and then I either give them to my mom (who gives them away to shelters) or to my sister - she usually loves everything I hate when it comes to clothes . She also has... about 5 closets full of clothes she refuses to throw and a body to kill for, so it makes sense
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As a general rule, I don't like to shop. And when I do, my heart falls for pricy stuff, meaning that if I go shopping seldom, I buy even more rarely things. Everything.
And, of course, being freshly out of school and living in another country are important factors in my not carrying much stuff around with me as a general rule.