Abstract: A lid for a candle is provided. The lid comprises an inner housing which includes an inner housing aperture, as well as an iris including an iris guide section and at least two blades. The iris guide section has a respective blade guide slot for each of the at least two blades. Each of the at least two blades has opposing ends, and at least one bolt aperture at each of the opposing ends. A respective bolt extends through each at least one blade guide slot and each bolt aperture thereby engaging the at least two blades with the iris guide section. The iris has an open position and a closed position. In the open position, the inner housing aperture of the lid is open, and in the closed position, the blades of the iris extend over the inner housing aperture, thereby closing the inner housing aperture.

Abstract: A device for variable volatilization of a compound includes first and second heating elements that cooperate to form a heating chamber and each having a movement enabling structure; the movement enabling structures being configured to allow movement of the first and second heating elements relative to one another; an adjustment mechanism cooperating with the movement enabling structures to produce selective relative movement of the first and second heating elements; and wherein movement of the adjustment mechanism in a first direction results in relative movement of the heating elements away from one another and movement in a second direction produces relative movement of the heating elements toward one another resulting in adjustment of the amount of heat within the heating chamber. Methods of adjusting the amount of heat within a heating chamber are also disclosed.

Abstract: A device for variable volatilization of a compound includes first and second heating elements that cooperate to form a heating chamber and each having a movement enabling structure; the movement enabling structures being configured to allow movement of the first and second heating elements relative to one another; an adjustment mechanism cooperating with the movement enabling structures to produce selective relative movement of the first and second heating elements; and wherein movement of the adjustment mechanism in a first direction results in relative movement of the heating elements away from one another and movement in a second direction produces relative movement of the heating elements toward one another resulting in adjustment of the amount of heat within the heating chamber. Methods of adjusting the amount of heat within a heating chamber are also disclosed.