I was sick of the crappy, cracked case that came with my cheap Harbor Freight drill bits, so I decided to make a slightly less crappy holder for them. Remove the 3 orange pieces inside, cut off the excess on the sides, and shove them in here for easier access to the bits. This model has screw holes as well if you want to mount it onto something.
Here is a link to the drill bit set I am talking about: HF Titanium Drill Bits, 20pcs
I printed it in PLA with a 0.6mm nozzle at 0.4mm layer height and it only took about 4 hours!
The author hasn't provided the model origin yet.