Alicornutopia

I feel similarly to Alicorn on this subject.

Has it taken a forest instead of a door at any time other than with Milo?

In any case, a prompt: two similar or identical worlds could develop a connection allowing people to travel between them (not Milliways probably). This could be like the time SunnyWitch!Bella was kidnapped to Slayer!Bella’s world, or could involve hijinks with “unique” artifacts or powers (like Secreting Secret).

Small Lurker got a forest door.

Oh, yeah, I forgot that part.

A prompt schema:

Any of the “person goes to a new world” things happening specifically to a selfspace. For example, somebody summons Demon Cam, but instead of actually writing on their floor, they write on their selfspace floor and Cam is now in their head.

Probably should wait until the setting is slightly further developed, but it could be an interesting twist.

I am pretty convinced at this point that selfspaces just don't do that, as a fundamental property.

I can see that, but I thought the Mirror’s might work differently.

It's conceivable that someday there might be a Legendary Talent whose selfspace isn't fundamentally private/internal, but the Mirror isn't it (and neither was the Door).

Drop Rockeye's Mountain in Night Vale, and see the resulting controversy she causes.

This requires clarification of what, precisely, Night Vale is.