I use this for holding spare drill bits. I live in a rural area, and as a consequence purchasing replacement drill bits is not always easy. Thus I have spares of all sizes from 1.5mm to 13mm, HSS, cobalt and 1/4" hex drills. The cabinet makes for easy selecting the required drill bit, and also for stock control.
I have 2 cabinets, one for HSS and the other for cobalt.