Makita magnetic bit holder
thingiverse
I got tired of trying out the various bitholders on thingiverse, and finally created my own that fit perfectly with my drill. It's magnetic so the bits don't drop out but are yet easy to take from the holder (which is my main complaint about the friction bit holders I tried). Also, you can stick longer (drill) bits to the bottom of this thing. Have a go at the F3D file to emboss your own name and adjust the holes to the size of your magnets. My magnets are 10x3x2 mm and work just fine.
With this file you will be able to print Makita magnetic bit holder with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Makita magnetic bit holder.