This all-in-one 3D-printed gas‑cylinder features a cylindrical design with a snap‑on lid. Its matte black exterior is accented by transparent light‑blue viewing windows, while the top lid incorporates a red petal‑shaped sealing cushion. A vertically oriented cutout on the side provides an unobstructed view of the internal gas‑cylinder level. At the base, a blue ring in the same color scheme serves as a layered decorative element. A hinged flip‑top allows for quick opening and easy access, and the compact cylindrical shape ensures portability without taking up much space. Combining gas storage and visual monitoring with secure sealing, the unit boasts a robust, one‑piece molded shell. The snap‑on lid offers smooth, crisp operation, and the impact‑absorbing cushion reduces noise. With both practical storage functionality and a mechanically inspired aesthetic, it’s ideal for everyday storage of small gas cartridges and convenient on‑the‑go use.