Who cares if it's ugly as long as it works?

In an experiment with airflow, I reversed the 120 mm fan in my computer case. I succeeded in creating positive pressure (no more dust bunnies, I hope), but the fan made an unacceptable clicking sound. A little experimenting, and I found that it's hitting something in the back of the case. So I unscrewed the screws part of the way, and hooked some rubber bands around the fan and the hard drive cage to pull the fan away from the edge of the case, and the problem is solved. Now both of my computers have rubber bands holding something in place. It's a good thing they don't get moved around too much.