Buck Converter Holder

The hotend replacement fan for a Lulzbot TAZ in http://www.thingiverse.com/thing:1461335 is great. But it requires a 25x25mm fan. The existing fan is 5V and the TAZ is a 24V system. But most of the fans you can easily find are 12v fans. To make the coversion, an easy way is a simple buck converter such as this: https://www.amazon.com/gp/product/B014Y3OT6Y/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
However, I don't like having circuit boards dangling freely inside the electronics chasis. T