Have an idle 3D printer and a GoPro action cam? Why not build yourself your very own GoPro steadicam mount? An Instructables by member haqnmaq shows you all the necessary steps, including 3D printing several parts for the key mechanism.
The Instructable includes the STL 3D models for the Fork and Gimbal pieces, which you can easily print. All other required parts are simply common screws, bolts, nuts, washers, a threaded rod, a shoelace and the handle from a paint roller. Easy!
Your 3D printer is designed to make stuff - for you. Make it so!