Universal magnetic scissors holder

This magnetic scissors holder is universal as you can customize it to fit any scissors;

The joined SCAD script has the following parameters:
- holder height
- holder wall thickness
- scissors upper width
- scissors lower width
- scissors thickness
- magnets diameter
- magnets thickness

Advice on parameters' value: while measuring your scissors,
provide some space to the scissors to let it float in the holder.

Provided STL has the following parameters' values (in millimeters):
holder_height = 40;
holder_wall_thickness = 2;
scissors_upper_width = 24;
scissors_lower_width = 15;
scissors_thickness = 11;
magnets_diameter = 8;
magnets_thickness = 4;