This is a box to hold a crux taco (that's the black & white item in the photos, a small sanding block for climbers to help remove callouses). There's no reason the box can't be used to hold any other small items.

It's held shut with a simple catch, I might look at redesigning this, but as an initial version I'm happy with the results but you do get sore fingers if you repeatedly open and close this.

This is print in place and prints with no supports, just print, carefully flex the hinge to loosen it up and use.

internal dimensions: 80mm x 35mm x 15mm (W x D x H)

update: Added a design with the Crux logo in the lid