Tetris Bookshelf

I was thinking this would make a nice shelf for camera lenses or other small objects. But my printer isn't large enough so I made a miniature test version instead.
Printer:
-- Afinia H480*
Filaments:
-- Up Yellow ABS
-- Octave Gold ABS
-- Octave Flourescent Red ABS
-- Octave Flourescent Green ABS
-- Octave Glow in the Dark Blue ABS
-- Octave Blue ABS
*affiliate link