Clutter is a mod that aims to add "vanilla-ish" styled blocks, items, entities and more to the game to make the game feel more "cluttered" (laugh).
Clutter also introduces new and fun gameplay mechanics to add variety to your experience, two examples of this are the new Potion Effect: Vulnerability that makes the affected take more damage and also more variations of the Elytra in the form of Butterfly Elytras.
If you have any suggestions for new blocks, items, entities or other features, feel free to join the mods discord server and send it in "suggestions". Your input could potentially be incorporated into the mod.
Example build using Clutter blocks.