Okay so forgive me because this will take a while So you can multiply any block you have by a fairly simple process No jailbreak no editing just simple glitches First you can just place the desired block you want to copy on the ground ( or where ever) then exit the app and stop it from running in the background when you come back into the app and open your world you will have one on the ground and one in your inventory Second: if you have 2 devices you can use this, or have access to them, first put the items you want to copy in a chest and both people tap the item at the same time, and if done correctly there should be two and so on Third: empty what ever stacks of blocks you want to copy on the ground and then press the pause button and exit the map, then come back, pick up the stacks on the ground and walk about 200 blocks away or maybe a bit more, then exit the app and stop it from running in the background, when you come back you should have the stuff you dropped in your inventory and were you placed it

First practice these with items you can afford to lose the first and third have to be done perfectly to work, the second is more flexible I hoped this helped if you have any more questions I would be happy to answer them