I saw an astral projection FAQ page, and I don't know if the author of the page is credible or not, but one of the questions and its answer on the page piqued my curiosity. Here it is:
You had said that there is an image of every physical object in the astral. Can you touch or change a particular object in the astral? Say, if it is a piece of paper, can you write? If you can, will it be in the altered condition when you return to the physical world?
The astral counterpart is exactly that. For example, once in the astral, I picked up a lipstick and drew something on the bathroom mirror, but it was not there in the physical. I have heard of cases where electric objects can be affected by the astral. All things can be changed in the astral but whether they will be changed in the physical depends on how close vibrationally you are to the physical. I have read that things exist in the astral because of our thoughts, and how long that remains in the astral depends on how much it is thought about. For example, mass religion may construct a "heaven" which becomes almost a permanent place in the astral because of so many millions of continual thoughts; whereas the lipstick I drew on the mirror will not be there after a few hours. That is why you can sometimes see furniture in your room that is not your own. It is probably the previous owner's furniture, which has its own imprint that has remained, and will take months to years to fade.Again, I can't vouch for how credible that answer might be, but let's just take it into consideration for a moment.
Now, before we go any further, think back to the ancient Egyptians and their burial practices (the kings in particular). When we think of the Egyptians, we often think of what a magnificent civilization they were. We marvel at their accomplishments and their amazing architectural skills that still remain a mystery today. The ancient Egyptians seemingly appeared out of no where in the historical record as an already advanced civilization. There's little evidence of their progression from primitive to advanced.
But when we think of their burial practices and how they included all sorts of treasures and objects that they thought their dead kings would need in the afterlife, we often think of them from a perspective of 'oh those silly old ancient peoples and their hokey rituals'.
Now, with the above question and answer in mind, could it be that the ancient Egyptians thought their kings would be able to use the 'image' of the physical objects they placed in their tombs? If so, then going by what the author of that FAQ page said, it would explain how the dead king would be able to use the objects, while the objects appeared to remain physically intact and in place.
If so, then I guess maybe the old burial rituals the Egyptians used might not be as silly as we thought they were. Of course, presumably the dead king's spirit wouldn't be limited to just hanging around his tomb, so the ritual of putting the objects in his tomb would have still been kind of pointless. However, I thought it was an interesting thought to consider that maybe the dead kings spirits might have actually been using the objects in their tomb!