People can walk. Most people can swim, and most of those can dive (at least a few meters). For us humans it's not hard to learn how to dive or sprint, and I'm thankful for that. We have mastered almost every form of transportation there is in the animal kingdom. But one is missing: Flying. Be honest: Have you ever dreamed you could fly? It would make things so much easier and more fun. And that feeling of freedom and joy when you majestically glide through the air... Unfortunately our bodies are not made for flying. But there's another thing we humans are great at: Building machines. So it's no wonder why mankind tried to invent a "flying apparatus" for quite a [long time](https://en.wikipedia.org/wiki/Leonardo_da_Vinci#Engineering_and_inventions). And ultimately, just a little over 100 years ago, we [conquered the sky](https://en.wikipedia.org/wiki/Wright_Flyer). Since then many things changed. Today enthusiasts have access to high-tech materials and electronics so advanced our ancestors would claim it is magic. But the desire to build something that can fly and "get up there" is still present. So naturally in recent years the market for little drones (copters) has massively increased for both hobbyists and professionals. The most common form being a quadrocopter, often with RC and sometimes a built-in camera module. And **many** tinkerers have built their own little flying contraptions, but almost always as some sort of "copter-platform". Which brings me to an interesting question: Why is nobody considering Zeppelins? I mean, yeah, these airships haven't exactly proven to be safe for public transportation. But that's mainly because they used to be filled with hydrogen. You see: A Zeppelin is basically just a more advanced hot-air balloon. A hot-air balloon will fly since the hot air inside the balloon has a lower density than the air surrounding it. Since you are displacing something heavy with something lighter, you get uplift. But hot-air balloons need to be fueled constantly. So what if you fill the balloon with something that's lighter than air (at the same temperature) and then close it off? Boom - a Zeppelin. What the balloon to fill with you ask? It turns out you can use either helium or hydrogen, since they are both really light gases. Technically there are other alternatives as well, but your balloon would have to be gigantic to support those. So helium or hydrogen it is. However helium is really expensive. And hard to get in huge quantities. So people decided to use hydrogen. A big mistake as it turned out, since if you have even the slightest of leaks in your balloon, you've basically build a giant oxyhydrogen bomb. But let's get back to our amateurs at home, trying to build something that can fly. For these people, Zeppelins would be great. You can produce your own hydrogen at home, and even if it blows up, who cares? Nobody will be harmed by an exploding balloon 1-2 m in size. But even better: If your Zeppelin is just 1-2 m in size, you **can** get helium to fill it. It won't be _that_ expensive. You can find small helium bottles everywhere. People use it to fill regular sized colored balloons. I'm sure you've seen this before. A little Zeppelin filled with helium is a perfectly safe thing to tinker with. With the help of modern materials like carbon fiber reinforced polymers and epoxy glue, it should be a piece of cake to build one of these flying bags. Attach some lightweight electronics to it aaand you're done. Cheaper than copters. Easier than copters. Cooler than copters. They require almost no moving parts and consume **much** less energy than a copter-based design. And they are probably quite a bit less noisy. So where the heck are all those amateurs with their Zeppelins?