Have you ever counted how many balls once pouch contains?
Weight:: 1 Stack
Cost:: 1 gp
As an Action, you can spill Caltrops from their pouch. They spread to cover a level, 1-square-meter area within 2 meters of yourself.
Hazard: The affected area is considered Difficult Terrain.
Spiky Floor: Any Creature that enters the area for the first time on a Turn or begins their Turn in the area must succeed on a DC 15 Agility Saving Throw or take 1 Piercing Damage and its movement immediately ends. Furthermore, until the Creature regains at least 1 Hit Point, its Walking Speed is reduced by 2 meters.
Cautious Movement. A Creature moving through the area at half speed doesn’t need to make the Saving Throw.
Recovery: Recovering the scattered Caltrops takes 5 minutes.