Milwaukee M18 tool clip / holder

Clip which is efficient with filament, strong and uses no other parts except some screws to hold it to a shelf or wall.

I have found that the tollerance of fit across different tools can vary, some of mine feel tighter than others but i've scaled it to a good middle ground (at least for my printer). 

For tools fitted with a belt clip, you can space the clip off slightly like in my pictures to get the clearance you need.

The battery holder works fine, but you need good layer adhesion to avoid the sides breaking off.