Print one Mushroom iPhone Dock Part A. Try to make this a few fun colors.
Print three Strut Caps. Put the strut caps into their seats in the Mushroom cap rollercoaster car. You may need to sand the ends of the strut caps to fit.
Draw a simple face on each of the strut caps with a Sharpee marker. One smiley, one flat, and one frowny!
Marvel at the simplicity of this juxtaposition, and drive it around your desk and feel the relief it brings. You can also put it on top of your filament spool, and watch them spin!