Estée Lauder used to package their Pure Color eyeshadows in little cubes that looked like ice cubes with color in the middle. They also had a lip lacquer packaged the same way.
The adorable mini eyeshadow must have come from a free gift.
There is even a mirror in the cap.
I love the packaging of these, and I think it was quite unique. The compacts the shadows come in now are chic and everything, but kind of predictable.