GoPro counter balance folding stick.
The idea behind this set is to provide a folding stick with a hollow handle on the bottom that can be filled with something heavy (sand..etc..) to act as a counterbalance to keep your GoPro stabilized during filming.
Hold the stick loosely in your hand for best results. You can of course also use it up-side-down for filming small kids or pets. As a bonus you can turn the hollow handle into a small tripod. The set includes long and short GoPro knobs to be used with M5 x 30 bolts.