A green banana, that you buy thinking it will turn yellow and ripe. Something like this is the concept of the dutch company, De Groene Banaan. This is the idea that made them create their product named Ivy.

ivy.jpg external hard drive de_groen_banaan

Ivy is an external hard drive. It’s easy to guess: when you start using it by storing data, it will alter its skin visualising the content of the hard disk.
IVY_img.jpg external hard drive de_groen_banaan

The pattern is always personal: it is created by the actual data, so it will be different every time you upload something new on it.

(source: joshspear.com)