CJB Item Spawner is an unofficial, fan-made modification of the game. It allows you to press the letter i on your keyboard to open a menu to spawn items. You can choose from different items and their various attributes and skills.

It is recommended that you install the latest version of SMAPI, which is a free, open-source software package that allows you to easily download mods, maps, and textures.

The following guide will help you install it:

Install SMAPI.

Download this mod and unzip it into the Stardew Valley/Mods folder.

Open the game.

Press the letter i on your keyboard to see the item spawner menu.