After rendering the pieces on the wall, I started to wonder what it would look like if they were all mounted onto a stand alone steel frame... I like how minimal the wall version looks compared to this... I wonder what this would look like suspended from the ceiling vs. coming up from the floor. The desert shot makes me chuckle.
I stumbled upon this website and am blown away with how thoroughly they cover this section on Interface and Interaction Design. It's free, you just have to sign up for an account. Check it out. This section is written by Martin Charlier.