Papercraft

This is a highly customizable texture pack for Minecraft versions 1.21.2 and upwards. As you can see from the images above, it renders your game as if it was drawn on a piece of paper. This is done in Vanilla Minecraft, which means you don't need to install any mod or client in order for it to work. All you need to do is turn on the texture pack.

There are multiple different visual effects you can achieve by editing the settings of the texture pack. You can achieve the default paper look, or you could also go to the other end of things and make your game look like a cartoon. There are instructions on the Modrinth page on how to configure the texture pack.