Vertical holder for a hobby scalpel. Has 2 compartments for blade boxes that come with such scalpels and 6 slots for blades. Designed so the scalpel rests on the handle and not on the tip of the blade. Doesn't tip over on its own, especially with magnets. Uses gridfinity 1/1/1 unit. 

Scalpel sits relatively tight, so three versions of the model are provided with different sizes of the hole for the scalpel handle. Version 84 (named after hole diameter) worked for me.

Onshape link if you need further modifications.