[PepeGomez]

I once made glasses that made me see polarization. It made plant leaves look beautiful.

[evanb]

Humans can see polarization without any apparatus, but it requires practice and patience.

http://www.polarization.com/haidinger/haidinger.html

[rocqua]

I came here to suggest this. Great to hear that someone actually tried it and found it to work.

Did it take long to get your mind to 'get' it? Did the effect fade? What polarization filters did you use?

[PepeGomez]

More or less immediately, as far as I can remember. I used polarizers from an old LCD display.