Why is there an extra piece of plastic on the lid of the tictac candy box, creating a small groove for what purpose? Surely many of you will wonder about this. However, the truth is that the plastic part of the tictac candy box is designed to make it easier to get the candy. You just need to open the lid, tilt it slightly to let the candy slide along the groove of the lid, instead of having to shake it vigorously and continuously like usual.