Small grease brush box

I recently purchased a dual pack of silicone grease for 3d Printer rails and Leadscrews.
Included within the pack was two small brushes intended to apply the grease.
These brushes need to be kept clean and equally must not be allowed to contaminate other things with grease.
To this end, I created a box specifically for these two brushes, however, the STL file could easily be edited in Blender to remove the internal structures to make it a plain void and/or scaled for other purposes.
I particularly like the hinge which uses a short piece of filament as the hinge-pin.