My method for storing and keeping an overview over my paints was always a very chaotic one. But I finally decided to change that so I bought these paint shelves from Esloterrain:
I bought these two to test their quality which is actually pretty neat. I especially liked the option to buy them assembled (which I did) so I could immediately throw my paints at them.
I'm happy I decided to buy them and I will definitely buy additional ones for the rest of my paints. :)