you can call this a "hack", cause it definitely feels like it. never lose your pencils or have them rolling on the floor and disappearing forever.
Pros:
- the cylinder holds pencils quite tight. No risk of having pencils slighting off;
- the magnet in it is very strong, it doesn't fall off when you or someone else touches it by accident;
- it comes with a pencil, obviously ;)
Cons:
- it's very small, so it could get lost easily if it's not put on a pencil or attached to a metal surface;
I'd note that I have only used the cylinder with a round pencil, so i'm not sure if it will work with the edged pencils.