This is a multi-purpose hexagonal shaped box. You can attach it to your keys with the mount on the lid. There is also a filter in the files to download in case you want to put chilli or any seasoning in it. Althought there is no limitations what you can put in the box 

You can print just one the box with the screw and the lid and use it for your keychain or in the kitchen. Or you can print the top box with the lid and then infinite bottom boxes witch you can stuck on each other.

Print settings:

Sliced file included (Prusa slicer)

Easy to print:

Supports just under the lid (you can cut out the mount and print it with no supports)

Infill - 20% (but can be higher)

Layer high- max 0.20 mm

Material- PETG (for food-safety)

Nozzle- 0.4 mm