Abstract: An inflatable blimp replica formed of thin plastic sheet, includes: a. an inflatable main chamber having walls which define the perimeter of the air space within the main chamber, and a gondola extending downward from the bottom wall, b. an inner chamber having a central part an open top part, and a closed bottom part, wherein the top part intersects and is heat sealed in an air tight manner to the top wall, the central part extends downward through the main body, and the bottom part extends into the gondola, such that the main chamber can be closed and inflatable notwithstanding the intersection of the inner chamber through the top wall, and c. an illumination sub-assembly within the inner chamber including at least one LED, a replaceable electric battery at the top part, and control means for controlling when the LED is switched on and off.