How To Make Sand/Gravel in the Air

So, let’s begin:

First we build a wall:

Then we deprive it of the vines, as on the screenshot (t.e. All):

Further on top of the wall we put any block (I have sand) and then sand or gravel, so that they stand on the vines:

We demolish the entire structure except sand or gravel, which is on the vine:

Below:

You can make it even more unearthly:

Build a wall in one block tall, and then according to the instructions:

But the whole system is a steam room because of this:

Well, everything, I think that some knew about it, but I showed this for those who did not know this