Feel free to share any premises that you don’t know how to flesh out here.

Some of these plot bunnies I came up with on my own, while others came from users on r/mylittlepony and the Fimfiction Discord server.

• Lyra is disappointed that humans don’t live up to her expectations.
• A dragon visits a country with a lot of dragon iconography. (Fun fact: there are holes in skyscrapers in Hong Kong so dragons can fly through them.)
• Rainbow Dash makes herself into a brand on Earth.
• Rarity drags Applejack to the Savile Row.
• A pony is self-conscious about their outdoorsy smell.

Also, I think the general idea of passports and portals - that is, these two parallel universes have contact and its no big deal - could also work for crossovers (not necessarily involving MLP), or even original fiction.