A small, glowing green canister with a radioactive symbol prominently displayed on its side. The canister is made of a combination of metal and glass, with visible wear and tear, including scratches and dents, indicating its post-apocalyptic origin. The interior emits a faint, eerie glow, suggesting the presence of highly radioactive material. The design is utilitarian, with a secure locking mechanism to prevent leakage, reflecting its retro-futuristic aesthetic.