The mod simply titled Tool Belt gives you quick access to four selected items from your inventory. Now what you carry in the new slots will be displayed in real time on your character. In addition, you can quickly switch to the desired subject in a rather beautiful HUD.
Tool Belt Mod for Minecraft 1.16.3 / 1.16.2 / 1.15.2
Although the modification is extremely small, you should definitely like it because it is extremely convenient. You just need to download and try to play with this innovation to understand all the convenience.