The case of a thick marker can be used for storing all kinds of small items (e.g., drills), if you remove the writing end element.
Such a container is easily mounted on clothing using the clip on the cap of the marker.
Recommend to read
MODEL ROCKET GLIDERS
Category S4. The rocket plane is an aircraft that is lifted into the air using the thrust of the rocket engine, and returns to earth planning with the engine off — using the aerodynamic...
DRYING WATER…
In this issue we introduce young innovators, participants of operation "the Introduction" with an unusual method of drying developed in Nikolaev. At our request about it, say the authors...
