Fishing with a lure you printed.
This lure will probably need a 5mm ball bearing for the 6mm hole.
you will need to make a wire through the whole lure so you can put hooks on it.
Suggest printing at 70% size. Thats what worked best for me.
Visit: https://www.thingiverse.com/rcreations-au/designs
And my friend: https://www.thingiverse.com/rotary_air/designs