Exploit to gain items, easy to do and find out, uses the creative mode + blocks with inventory access to get yourself infinite blocks.
{F1487}
How to reproduce:
# Get yourself in creative mode (shipyard design)/build mode of a design ship.
# Place down a chest on it (or any other ship-place able block with an inventory)
# open the chest and drag-drop any infinite block in it. It will turn into real blocks with 9 999 999 as block count.
# get out of design mode, open that chest and take the 9 999 999 blocks.