Reinventing wheels makita drill magnet 

These are very strong magnets that bolts on the side of a makita drill supplied with the correct size screw to attach to the side of your drill, they bolt in to the  hole on the opposite side to your belt clip,if you took the belt clip off you could use 2 of these magnets. 

This is a very strong magnet not like a fridge magnet. you can attach a hand full of screws to it or a drill bit etc. 

Ideal for going up a ladder or so you don't need a mouth or pocket full of screws.

Grate for the jobs where you need 3 hands.

These are neodymium magnets and are the strongest magnets currently available they are used even used in MRI scanners.