In Fizban’s there is also the Moonstone Dragons. They’re supposed to be dragons that have been changed by the feywild. It’s actually one of my favorite dragons.

I’ve framed up a sylvan dragon that’s basically made of bark and plant bits, tree strides at will, blends into forest, ensnares enemies with spike growth and similar. Also started on a moss dragon and a mist dragon for high mountains in clouds sort of vibe. In my world dragons tend to be celestials whose job in the celestial bureaucracy is administering the orderly functioning of the natural world. So there are dragons responsible for certain bodies of water or rivers, dragons responsible for the sprouting and growing of plants and crops in spring, and so on.

My daughter loves cats, so I made a cat dragon for one session I did for her and her friends. It was so fun and they loved it so much they refused to fight it...yeah, it became a big part of the campaign. Could totally see it as a fey dragon.

Also remember the fey is all about emotion. It does not have to be silly, or happy, or wondrous. Maybe it is bi polar. And people don't know what triggers each swing. And it emanates these emotions to people in their region. Good video!

In my homebrew setting the Feywild includes a desert where the sand is made of gemstones. I'm going to have to make a dragon to live there, probably including that Prismatic Spray Breath you mentioned.

I made a fey dragon that instead of having a damaging breath wepon, it's breath wepon is a thick pink fog that causes the attacked to make a con save or be charmed to give it all the items and gold on their person that the dragon seems to be valuable to it. It has a very handsome, human-like face with a flamboyant voice. They don't like getting dirty or physically when getting food or treasure for its hoard. It spends its days charming creatures to hunt for it and building small communities of charmed creatures. I call it a love dragon, it's called that for its mist has slight aphrodisiac properties when inhaled in very large quantities

Takes notes.

I absolutely love the flavour of a fairy fire breath weapon. Or when the dragon is more allied with the unseelie court maybe a darkness breath weapon. Or taking inspiration from the chaos bolt spell where the damage type changes randomly. One idea that I also had during this video is a kind of hag dragon. Maybe a hag wanted to become more powerful and underwent some transformation to change into a dragon form. With this transformation vibe a polymorph breath weapon could be cool. Or (if your table is fine with it) some body horror stuff

To build off of the more traditional categories of dragons it'd be interesting to see what an Iridescent Dragon(Chromatic), an Opalescent Dragon(Gem) or a Bismuth Dragon(metallic) would look and play like.

Imagine what it would be like if a Faerie Dragon was powerful enough to run a Domain of Delight, and what such a realm would be like. Size, just like time, is not immutable, and such a Faerie Dragon can be as big as it wants to whoever lives or wanders into its domain.

I feel like there’s room to reinterpret the jabberwock as a more intelligent creature. Instead of its burbling being nonsense that magically confuses you, it could be words carefully chosen to perplex you, which fits with both the original poem and the tricky dealings of the Feywild. Plus, it wears a waistcoat for gods sake I can’t buy the idea that the jabberwock is a mindless beast just based on that alone

You should check out the New Pathfinder 2 Core Dragons, the conspirator dragon for example

How about a Weredragon? An otherwise normal Fey creature has an ability to transform into any kind of dragon.

Each successive edition of D&D has given dragons the "bigger-better-faster-more" treatment. And it really makes me tired. How is it that we have forgotten that less is more? I prefer the dragons of AD&D 1e... because they were less, and therefore MORE. There was a small chance that a dragon could talk, and even smaller chance that it could cast spells. Most couldn't do either. Just like Arthurian dragons, see? Less. MORE. In my campaign world, there are no dragons in the settled civilized lands. Brave men killed them all. In the Fairy Wildlands beyond the borders of civilized kingdoms, however, dragons do exist. They are forces of nature, and each one is unique and I build them all from scratch. Often, I try to make them personify some moral vice, typically greed, gluttony, or pride. An example from my homebrew world: His name is Cinderglum. I used a mature adult red dragon as a starting point... he can talk, but can't cast spells. Changed his breath weapon to a cloud of acrid smoke. Took away all his special powers, except for the fear aura, and gave him a deafening roar like the dragonne. He is a good-aligned dragon and he embodies the vice of sloth. He is the sworn protector of the Maidenvale (a river valley in the Fairy Wildlands populated by Neolithic humans) but since he personifies sloth, he is very remiss in his duties. He always keeps his word, he just doesn't do it until 2 or 3 centuries AFTER it is too late to help. Cheers.