Make a toolset and put your chosen items or custom items on the ground of your toolset. Name your toolset and go to "New Game" at the starting menu, then choose "Other Modules". Click on your module and create or open an existing character. When your module has loaded, pick up the items that you placed on the toolset then save your character (not your game). You can now begin a new game with that existing character, with the good items. Note: You can also get easy experience by editing enemies so that they are worth more experience points.