The key to folding matter can be found on your bookshelf.
Each book holds within itself spaces, rooms, worlds without end. All we have to do is replicate that function.
You may think that is no easy trick, but we know it can be done. We have had a recent expert demonstrate how easily matter can be made to disappear (without the normal powerful release of energy).
ThomasThomas misplaced a bag of hardware. He searched endlessly for it, but it was nowhere to be found. He'll tell you.
That's part of the technique. But it's more than just opening the hamper dimensional door and feeding it a sock. Eliminating things won't help us if we want to be able to get them back.
Now, every book of magic or fantasy, from Harry Potter to Heinlein's "Glory Road", has space available to store things, that does not add to the mass of the storage device.
Many will say this is physically impossible, but they are simply not thinking in enough dimensions.
Maybe this is the solution for nuclear waste discussed in another thread. But I think we need to look to the French for the answer for this problem. It also the reason that they make so many great sauces. I almost forgot the the mustard. Witch leads us to the question. Why is there only one way to spell mustard?
Re #2506<p. you mean like a TARDIS?
Cats.
Cats know the secret of folded space.
They just won’t talk about it.
At least, not in English.