Cave ants

A neutral mob that acts in groups that live in caves, and has the habit of carrying falling items and bringing them back to their nests.
Appears in nests created in caves.
They do not vibrate and can walk without making footsteps, so they are not hostile to Warden.
And in some cases you may use Warden.
If you have any other good ideas, let us know in the comments.
Thank you for taking a look at my thoughts.