Abstract: A device for cooling a substance stored within the device has a body with an internal compartment for holding the substance to be cooled. The compartment can be sealed closed and can be accessed for adding substance to the compartment for cooling or for removing substance from the compartment after cooling the substance. The body of the device has an internal cavity that surrounds the exterior of the compartment holding the substance to be cooled. Fluidized coolant is injected into the cavity through an injection port to cool the substance contained within the compartment before removing the substance from the compartment for use. The device may include exterior buttons that compress the internal compartment when the buttons are pressed toward each other, which in turn compresses and breaks up the substance contained within the compartment.

Abstract: A pneumatic trash can having a built-in air blower system is provided. The air blower system facilitates ease of placement and removal of a flexible trash bag within the trash can. The blower system is designed to evacuate air from the interior of the trash can and to blow air into the interior of the trash can. The trash can additionally has a drainage system designed to drain any liquids that may leak from a trash bag in order to keep the liquids away from the blower system.

Abstract: A roll of heat sealable bags having markings on the bags to indicate the weight of a portion of bag material located between any two markings. A user can cut off any desired length of the roll to form a customized bag of a desired size. The user can then quickly determine the weight of the customized bag by visual inspection of the number of markings on the bag. After filling the bag with items to be packaged, the markings allow the user to determine an accurate weight of the contents of the bag by weighing the filled bag and subtracting the weight of the bag material from the overall weight of the bag plus contents.

Abstract: A device for cooling a substance stored within the device is provided. The device has a body with an internal compartment. The compartment can be sealed closed and can be accessed for adding a substance to be cooled to the compartment or removing the substance from the compartment. The body of the device has an internal cavity that surrounds the exterior of the compartment holding the substance to be cooled. Fluidized coolant is injected into the cavity through an injection port to cool the substance for use.

Abstract: A preferred embodiment of the invention is directed to a pneumatic trash can having a built-in air blower system to facilitate ease of placement and removal of a flexible trash bag within the trash can. When an empty trash bag is placed into the trash can, the blower system evacuates air from the inside of the trash can so that the trash bag quickly and easily conforms to the shape of the inside of the trash can. When a trash bag that is filled with trash is removed from the trash can, the blower system blows air into the bottom of the trash can so that the bag can be removed quickly and easily. The trash can is further comprised of a drainage system for draining any liquids that may leak into the bottom of the trash can and for keeping the liquids away from the blower system. A preferred embodiment of the invention further comprises a method of installing a flexible trash bag in a trash can, as well as a method of removing a flexible trash bag filled with trash from a trash can.