antagonist/curse

Big Bad named Jack of Nine Witches laid a curse on the PCs when they stopped his diabolical plans. He cursed them to be harassed by evil fey. I described these fey as small humanoids that moved super fast, quicker then the eye could see. They where very weak though so they avoided fighting the PCs. Instead they would grab the PCs food and replace it with rotten food and spoil the players water. Later the PCs heard something crashing towards them from the woods. One of the little fey appeared shouting "This is yours" and tossed a small bear cub into the Dwarf's lap. He immediately stood up, shouted run, and took off from the camp site with the rest of the confused players following. The 1st level party had no intention of fighting a mother bear I guess. Later I had the fey appear using a magical drum that caused basically the same effect as Otto's Irresistible Dance on everyone hearing it. One of my players that is very new to rpgs pulled out the small trumpet/horn he wanted his fighter to have from the start and tried to play over the drums to free the PCs. I for some reason took pride in him thinking up with this plan and he really started to come into his own in the game with creative solutions. Later I had the fey helping some of the Witches that birthed Lucky Jack. During the encounter they would grab pieces of the PC's personal belongings and hair that the Witches used in voodoo dolls. The Witches would make these dolls and hang them, toss them into the lake, or throw them into the fire at the base of the cauldron. (All Witches have a cauldron at all times) The players where running around frantically trying to save their own voodoo dolls or fight the Witches. For now the Gremlins have been scared off but I am trying to come up with other ways to use them. The PCs are going to have to go after their King to stop the curse and I am imagining a Labyrinth King of Gremlin Kind David Bowie character. Maybe he will want their first born to call it off...