WARNING: putting multiple tanks on the same system can crash the game. This is a very expensive 1x1 fluid storage tank that holds up to 183 billion fluid. It used to be infinite, but this is the game limitation in Factorio 2.0.6. It is necessary to put a pump at the output, otherwise only part of the fluids inside the tank will drain out. The tank costs as much as 100 regular fluid storage tanks (2000 iron plates and 500 steel plates) OR you can make it directly using 100 fluid tanks. Either way
Mods introducing new content into the game.
An expensive small 1x1 chest that can hold a near infinite amount of items (65530 slots=3.3mil iron ores=6.5 mil iron plates=13mil steel plates). Good for being used as a buffer for ores. If you want a big 6x6 version (~1800 slot storage), look up the warehouse mod
Mods introducing new content into the game.
Scenarios, maps, and puzzles.
Small little portable nuclear reactor (3x3), good for the first power armor, useful on scenarios with no sun for solar panels
Mods introducing new content into the game.