Sky Vine

The general idea is nailed down, details are flexible.

Sky Vines are just like a cross between vines, baloons, and kelp. They have huge bladders filled with floating gas, and stretch up into the air from almost every surface of Faierie. They often become entangled in the solid-clouds, which will then hold them up, allowing some of the Fay to make the bubbles into their dwelling places. Doing this entices the sky vine to create more bubbles nearby, which leads to more inhabitants, and eventually develops huge cities of Fay, suspended between the earth and sky.

The sky vines occasionally release from the ground, or break into pieces. When this happens, they drift up into the outer fire, are converted to Fay dust, and settle back down, where the dust grows new sky vines

Questions/ideas

• Where can sky vines NOT grow? Probably on sand, where they have nothing to grab on to, and thus float away. There could be plants which are hard for the sky vines to grab on to as well.
• There could be some creatures which suck the buoyant gases from the bubbles to allow themselves to fly more easily.
• What kind of strange creatures would live on/in sky vines?
• How large are sky vines? a few inches in diameter? A few meters? Are there different varieties that "mature" at different times/stages?