Grecian Goddess Barbie from the Great Eras Collection (1996)
My mom got me this doll for my birthday several years ago (I'm a Classics major so big Greek nerd) and I kept her in the box. The box is a really cool opening window display one.
Then I read online that leaving dolls in the box too long doesn't preserve them, but can instead damage them. I was in library school at the time and I'm especially interested in archiving, so I felt like I should've known. But anyway, I took her out of the box and sure enough, her hair elastic had crumbled into her hair and she had a weird dusty film.
So I cleaned and restyled her hair, and she's out of the box now. I love being able to actually see her!