I’m putting together a character for a game, and it’s set in a location that’s pretty windy most of the time. So I thought, hey, why not a druidic Circle of the Land, where the Land in this case is the Wind.
There’s not really much to a new Land; just a list of spells.
Druid Level -- Circle Spells
3rd -- gust of wind, levitate
5th -- fly, wind wall
7th -- dimension door, freedom of movement
9th -- insect plague, telekinesis
A more ambitious take would let them use flying wildshapes almost immediately, at the cost of some other class function. The bonus cantrip or that resting for slots mechanism, maybe.