This project was organized by Faculty of Natural Sciences and Engineering in Ljubljana, where I study at the moment on master's degree. I made this identity with 3 others students and we took the first place. 
The most special thing about this logo is, that it changes every time a person presses a special keyboard shortcut.
the changing logo
letter, envelope and business card from both sides
bag for costumers
all the elements collected together in a small book
business cards