With this mod, items stacked over 100 will show as three overlapped instances of the item and items stacked between 10 - 99 will show as two overlapped instances of the item in inventory menus.
You can change the minimum amounts for double and triple stack and the spacing between the instances in the config.
Config
You can customize this mod by editing the config file or using Generic Mod Config Menu.
Technical
Requires SMAPI.
Implements a Generic Mod Config Menu interface to change config settings in-game.
Compatible with Mod Updater for automatic updates.
Code is at https://github.com/aedenthorn/StardewValleyMods.
If you want to complain or ask for help or help me test my mods, you can visit my Discord server.
A list of all my mods for Stardew Valley is available at https://www.curseforge.com/members/erinthe/projects.