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by Doxin 636 days ago
They came in all sorts of shapes. I distinctly recall jars of peanut butter having shirt-shaped ones in the lid for a while. Something like this[0]. As I understand it since CDs are written from the inside-out, you can make them roughly any shape you like as long as it's more or less balanced. You'll just lose capacity.

[0] http://www.dvdreplication.co.nz/packaging/dvd-cases/mini_sha...