With this mod you can set the following:

You can change the toolbar orientation by pressing the rotate key while hovering over the toolbar.

The game has an option to pin the toolbar, preventing it from swapping top / bottom (and left / right with this mod) when the player moves. This option will prevent moving the menu.

The config variables are as follows:

"ShowWithActiveMenu": false,

[/b][b]"Vertical": false,

"RotateKey": "MouseMiddle",

"SetPosition": true,

"PinnedPosition": "bottom",

[/b][b]"PositionX": -1,

"PositionY": -1,

[/b]
[b]"MarginX": 64,

"MarginY": 64,

"OffsetX": 0,

"OffsetY": 50,

You can change these by editing the config.json file or using Generic Mod Config Menu.
Technical

Requires SMAPI, uses Harmony.

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.nexusmods.com/stardewvalley/articles/895.

Custom Toolbar