A simple mod that shows the nickname and HP of the player you're looking at requires Fabric API.

Inventory Saver is a Minecraft mod that lets you save your inventory layout and restore it with a single key. After saving, you can automatically reorganize your inventory back to the saved arrangement.

Keybinds Setting is a mod that, when you press a key (e.g. B), opens a simple GUI allowing you to quickly change assigned keybinds (such as movement or jumping) without going into the game settings.

This mod lets you quickly download the server’s texture pack. Press H, click “Download texture pack,” then “Open folder” to access the downloaded file.