The dreams of every filmmaker/DIYer/LEGO fanatic are about to come true right now.
Buying cool gear is great, but it's a lot more fun to build it yourself. If you agree, then you might want to take a crack at this tutorial from Product Tank, whichhows you how to how you can make a camera stabilizer for your GoPro or smartphone out of LEGOs and rubber bands (springs for better results). So, dump all of your blocks out onto your childhood street rug, grab a Capri Sun, and get to work.
The tutorial takes you step by step through the construction of the stabilizer, which is separated into three parts: the holder, the balancing arm, and the tensioning system. One thing you might find surprising is how few LEGO blocks you actually need to build this thing, especially considering the work its doing to stabilize your camera, however small and light it might be.
However, there are definitely several limitations to operating a camera stabilizer made out of LEGOs, the first, of course, being that it's made out of LEGOs. If you just dropped a few hundred bucks on a brand new GoPro that you don't want to get scuffed up (why buy a GoPro then, right?), you might not want to take this thing out for a spin. There can also be problems surrounding the weight of the stabilizer; it's lightness may become an issue if there's a significant amount of wind resistance or if you move forward too quickly.
Other than that though, this thing seems like a fun project to do when you've got some spare time. And if you don't have the resources to get your hands on a stabilizer for your GoPro, this thing could actually become a piece of gear you use again and again.