Bag of Neverending Onions

This is a sturdy cloth bag weighs 1 pound and appears to hold onions.   You can reach into the bag and withdraw up to three onions at a time.

If you dump the bag's contents out on the ground, the onions explode in a 10-foot radius cloud of noxious gas, extending from the onions. Each creature in the area, including you, must make a DC 15 Constitution saving throw, taking 2d4 poison damage on a failed save, or half as much damage on a successful one.

The Bag of Neverending Onions can be used up to three times over the course of a day. After that, the bag can’t be used again until the next dawn.