Since the replacement filler material is somewhat springy and difficult to form and stuff into the cart., this technique seems to work pretty well for me:
Use a toothpick and roll the polyester filler tightly around the toothpick.
Insert the toothpick with the material attached, into the empty cart.
Reverse the toothpick twist, and remove the toothpick--leaving the filler material in the cart. Use scissors to cut material even with cart top.
Fill with juice and vape.
Use a toothpick and roll the polyester filler tightly around the toothpick.
Insert the toothpick with the material attached, into the empty cart.
Reverse the toothpick twist, and remove the toothpick--leaving the filler material in the cart. Use scissors to cut material even with cart top.
Fill with juice and vape.