Banana?

You may eat this banana for 1d6 of healing. 

After this item has been consumed, you may toss the banana peel on the floor. If a Sleight of Hand check is succeeded, this banana peel is successfully thrown on the ground unnoticed. All entities who come within a 5m radius of this banana peel must succeed a DC15 dexterity save or are immediately knocked prone. After they stand, they must succeed a dexterity save or else be knocked prone again.

If a specific entity is prone 5 times, they gain the exhausted effect.