Rules:
*You can teleport into and out of it at will
*It has a couple of plug sockets and can connect to internet from the region you teleported in from
*You can take objects and people with you
*As already stated, it is (3m)^3 (3m*3m*3m). The walls are plain plaster with a light in the middle of the ceiling. The pocket dimension is topologically toroidal, so if there weren’t walls and a ceiling/floor (which you can actually destroy) you would loop if you went more than 3m in any direction. Gravity, then, is artificial and can be altered to anywhere from 0 to 2g from a dial on the wall.
Edit: additional specifications
*You can only teleport out to where you teleported in from.
*Time proceeds at the same rate inside the pocket dimension
*There is an eject button for those inside to get out if something happens to you
The archivist inside of me thinks it’s a good idea to make this the control room of the beIN headquarters, because I know a television channel of theirs that has a hell of a lot of lost media. I think Al Jazeera slapped their name on this channel (but it’s not related to journalism, I promise) back when they used to own it, and they made a lot of great shows (and had great branding), but there’s very few archives of what they actually made.
So, in a way or another, I’d be the one responsible for leaking their assets.
https://en.wikipedia.org/wiki/Jeem_TV?wprov=sfla1 is what I mean by that television channel I’m talking about.