Concept art emerging from broken text on a broken screen. Gave me transportation logo vibes. A discord server and I decided it was a bus stop or airport sign.

Since I was trying to develop some ideas for the weird built-into-hanging-roots world, I wondered what public transit would look like. Flying taxis maybe? And what Floating Island world would be complete without Flying Sea Creatures?

Of course you could have carriages / busses that cycle between set stops and pick up people if need be.
But, hear me out, what if we made it needlessly complex? with fantasy semaphore? For unplanned expeditions across a large gap, you'd want to be able to tell the carriage driver whether there is someone to pick up or not so they can direct the Squid Taxi over. Visual signals are a reliable way of doing this, provided the gap is no wider than a mile or two.

The upper design takes a short but wide cylinder and lets it do duty as a circle, filled circle, or line depending on the angle it is set to. The signal drum can also be stowed to prevent damage or indicate an out-of-service state.
This has no reason to exist, other than being Cool. It's well-thought-out, but not well-placed.

The middle design was mostly me testing out visuals for Ember, a dangerous but predictable type of magic. Think of it like high-pressure water, except it reacts violently on contact with organic matter. Or water. Or really anything that isn't metal. It's used as a power source, since the amount of light and heat it produces on decay can be calculated. Some materials react to it in easily throttled ways, allowing for transistors, and presumably computers, to be made with the stuff. Not as compactly as modern electronics, obviously. And since it can be stored, memory systems are much easier to design.
The lamp shown here basically has tubes with tiny holes in in front of a catalyst plate that turns all the Ember into light. Reactions with the humid air of the realm mean that some of the magic is first lost as heat. But at this size, making it vacuum-sealed would be very expensive.
Now, if only we could make a good Ember-powered motor...

The lower design shows a Whale Train arrival / departure board. For large-volume long-distance transport within the realm, nothing beats a whale. Except an actual train, but those are Expensive and can only go in certain directions.
Not pictured is the computer running it, which takes up a small room and doubles as the train station's heating system.

...would a flying train station count as an airport?