Lovely Snails Mod

The Lovely Snails mod adds a new mob into the game: snails. These snails can be tamed and befriended by the player. Snails can be found mostly in the swamp biome, and the player can tame the snail by feeding it mushrooms. A tamed snail can be equipped with carpets for decorations. To do this, right click on a tamed snail. This will open a GUI, where there's a slot to place a carpet. Once a carpet is placed into the slot, it will appear on the snail's shell. You can feed grass, fern or kelp to a grow a snail. You can also hydrate it by throwing a water splash potion. A snail that has grown to it's adult size will be as tall as a player. A player can place chests or even ride an adult snail. 

Take a look at the screenshots to see what you can expect from this mod. This is a Fabric mod and download links are given below. Read the installation instructions carefully.