Final Fantasy VII Cheats

Tons of Gil or Sylkis Greens
First you need W-Item which can be found in the train place under Shinra Headquarters in your second encounter if you keep going down.

Buy two Sylkis Greens from the Chocobo Sage.

Make sure Counter-Attack is not equipped.

Get into a random battle I recommend and easy one.

Once you are fighting, use W-Item Sylkis Greens on 1 enemy.

Once that is done, press (O) but do use it. Then press (X) then (O) and keep repeating. The item will multiply.

Once done, you can either sell the Greens or keep them.