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
Okay, first things first, this talk of making it my living space? Nix that. That works well enough for a single person eating microwave dinners, but I like cooking and having people over. But travel? Yeah, that would be awesome. I’m thinking:
My only concern then becomes a toilet and shower. I guess you could move water in, but the water pressure is going to be crap.
Actually, you could drill a hole in the floor and have water continuously accelerate to get incredible water pressure.
Now you’re thinking with portals
I suppose then you have the opposite problem. Death by infinite water pressure.